Electrical stuff
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| show | Electricity
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| Two types of electricity: | show 🗑
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| show | current electricity
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| show | Static electricity
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| What is the study of stationary electric charges? | show 🗑
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| show | Coloumb (C) named after Charles Coloumb.
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| The Coloumb (C) is a fixed (constant) number of positive or negative charges and is equal to ? | show 🗑
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| the process of applying a positive or negative charge to a neutral object through the transfer of electrons. | show 🗑
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| show | Added
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| show | Removed
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| Surrounding every charged object is an ? | show 🗑
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| show | The same
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| What determines the area of the field? | show 🗑
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| show | The greater the charge, the bigger the field.
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| The planet Earth is considered to be an infinite ? for electrons. | show 🗑
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| show | Physically
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| What is the primary goal for grounding throughout any facility? | show 🗑
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| What is the secondary goal for grounding? | show 🗑
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| show | Deficiency
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| What is the path flow of electrons if a positive object is electricall grounded to the earth? | show 🗑
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| show | It is said to have too many.(an excess of e-)
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| show | Electrons will move from the negative object into the Earth until the object is neutralized.
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| Electrically connecting any charged object to the Earth(grounding) will ?? the object. | show 🗑
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| show | ( arrow pointing down)
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| Electrostatic Law #1 | show 🗑
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| show | On the external surface
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| show | directly proportional/inversely proportional
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| show | changes
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| Direct current describes a current that moves through a substance in the ? direction. | show 🗑
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| show | Negative
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| show | Positive charges
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| show | Friction
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| Friction is also known as | show 🗑
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| show | Least
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| Any substance which permits electrical charges to move very easily through that substance. (very low resistance) | show 🗑
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| show | Conductors
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| Any substance that blocks the flow of charges through the substance. (very high resistance) describes: | show 🗑
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| glass, rubber, plastic, wood are examples of: | show 🗑
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| show | Semiconductors
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| show | semiconductors
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| show | Superconductors
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| show | superconductors
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| show | Concept of conventional flow
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| show | Concept of electron flow
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| show | Conventional flow
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| show | Electron flow
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| When one electron is inserted into one end of the conductor... | show 🗑
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| The source for external electrons is... | show 🗑
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| the electron that is displaced from the conductor carries what type of energy? | show 🗑
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| show | A difference in poetential energy must exist between two locations to make current.
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| show | Electromotive force
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| show | Voltage
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| EMF causes the electrons to move from the area of ? concentration toward the area of ? concentration. | show 🗑
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| The movement will continue until a ? is established throughout the substance. | show 🗑
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| Unit of electromotive force is called the: | show 🗑
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| The number of electrons passing a given point per unit of time is a measure called: | show 🗑
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| show | Ampere
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| show | One coulomb of charge moving past a point per second. 6.3x10^18 charges
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| The inherent action which opposes the forward movement of current describes: | show 🗑
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| show | Ohm
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| show | Inherent resistance
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| show | Length of conductor, Cross sectional area of the conductor, What the conductor is made of, Temp of conductor during current movement.
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| show | Directly proportional (the longer the conductor, the more resistance)
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| What is the relationshiip of the cross sectional area to its' inherent resistance | show 🗑
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| Elements with what type of valence and how many shells will have a lower resistance? | show 🗑
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| As the temperature increases the inherent resistance: | show 🗑
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| what is a fixed resistance? | show 🗑
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| show | Rheostat
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| show | Fixed amount of resistance
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| Rheostat symbol | show 🗑
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| Added resistance in a conductor is called a ? | show 🗑
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| The purpose for any electric circuit is ? | show 🗑
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| Electric power is the product of ? | show 🗑
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| show | P = I x V
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| Unit of measurement for electric power is: | show 🗑
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| Electric circuit is a closed complete ? pathway through whhich current can move. | show 🗑
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| Minimum circuit requirements: | show 🗑
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| show | series, parallel, complex, short
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| show | Series, parallel, complex
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| show | Pathway, amperage
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| show | Voltage
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| If a circuit contains some loads that are in a series and others that are in a parallel the circuit is called ? | show 🗑
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| show | In series
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| show | Parallel
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| show | Insufficient added resistance
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| What has to be properly balanced for the circuit to operate correctly and safely? | show 🗑
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| The balance is determined by what law? | show 🗑
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| show | Current intensity is directly proportional to electromotive force and inversely proportional to resistance
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| what are the variations of ohms law? | show 🗑
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| show | Current and voltage and resistance
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| show | Power, and current and voltage and resistance.
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| Watts formula: | show 🗑
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| show | Luminous effect thermal effectMagnetic effect Chemical
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| which effects always occur? | show 🗑
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| When a current is passed through a resistance, friction occurs that produces heat | show 🗑
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| show | P=I^2R
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| Chemical Effect: | show 🗑
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| show | Dry cell and Wet cell
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| Dry cell battery has a moist chemical paste b/n two electrodes which creates chem. reaction and producing and emf of how many volts per cell? | show 🗑
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| Wet cell battery has a liquid between two electrodes creates chem reaction to produce an emf of how many volts per cell? | show 🗑
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| Devices used to measure electrical current characteristics: | show 🗑
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| Anmeter measures | show 🗑
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| show | voltage
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| Battery symbol | show 🗑
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| The ability of certain materials to attract iron: | show 🗑
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| show | Iron
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| show | Magnetization
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| How many years ago when the magnetic phenomena was first observed? | show 🗑
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| where was it first discovered? | show 🗑
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| show | Magnetite
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| Magnetite is now called: | show 🗑
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| show | Compass
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| show | 1000 A.D
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| Who discovered that a magnet has polarity (Poles)North and south | show 🗑
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| show | William Gilbert
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| Who discovered that an electric current will produce a magnetic effect in 1820? | show 🗑
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| show | Michael Faraday
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| show | Natural, artificial, and electromagnets
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| show | Lodestone and Earth
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| Artificial magnet is a manmade material that exhibits the property of magnetism. What is an example? | show 🗑
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| Electromagnet is a material that exhibits the property of magnetism only during the application of what? | show 🗑
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| show | Helix
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| show | Solenoid
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| show | Inductor
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| When a rod of iron is placed through the center of the coil of the solenoid what is formed? | show 🗑
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| show | North pOle and south pole
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| show | Like magnetic poles repel each other, unlike magnetic poles attract each other
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| show | to the product of the strengths of the poles and inversely proportional to the square of the distance between the poles
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| Third magnetic law is sometimes called the: | show 🗑
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| show | maagnetic flux
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| the first flux property states that flux exits the | show 🗑
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| show | Flux leakage
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| the 2nd flux property states that flux form closed loops "magnetic circuits" and the flux lines from the same magnet never? | show 🗑
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| show | Repel each other and flux that travel in opposite directions attract each other
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| flux propety 4 states: | show 🗑
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| Whenever a magnetic material moves into the field of a magnet material becomes magnetized while remaining in the field is | show 🗑
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| Weber's observation #1 | show 🗑
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| Weber's ob 2 | show 🗑
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| Weber's ob 3 | show 🗑
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| show | If a piece of iron is rubbed w/ a mag repeatedly in the same direction it will become a mag
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| Web ob 5 | show 🗑
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| magnetic domain theory 1 | show 🗑
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| show | magnet
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| show | Magnetic field
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| MDT 2 a magnet is formed when all dipoles are: | show 🗑
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| the more dipoles that are arranged in the same direction: | show 🗑
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| show | magnetized
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| When the dipoles are arranged in an orderly manner what is acquired? | show 🗑
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| show | an ion in motion
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| show | 1. e- moves around nucleus in an orbital path2. e- spins on it's own axis as it moves toward the nucleus (orbital and axial spin)
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| a magnetic moment is formed when what is established around a moving ion? | show 🗑
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| each type of movement creates an idividual magnetic movement: | show 🗑
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| show | A proton spinning on it's own axis within a hydrogen nucleus.
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| As a proton spins on it's own axis what is formed? | show 🗑
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| show | Based on the spin structure of the atom within a given element resulting in magnetic moments
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| What determines the magnetic properties? | show 🗑
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| show | The greater is the magnetic potential for that atom
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| Atoms with a what valence electron number have more potential to become magnetic than those with a ? number of valence e-. | show 🗑
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| show | Pretty much none since the spin motions cancel each other
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| Atoms with a 7 valence e- with seven orbiting clockwise and 0 cc | show 🗑
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| But atoms with 7 e- with four orbiting clock and 3 orbiting cc will | show 🗑
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| Magnets of same substance can demonstrate varying degrees of | show 🗑
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| show | Flux intensity andFlux density
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| Flux intensity is the ?? of flux in the magnetic field at a given point in time | show 🗑
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| show | The stronger the magnet
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| show | Weber (Wb) 1 Wb=10^8 flux lines (100,000,000)
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| show | the greater the flux density the stronger is the magnet
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| Unit of flux density: | show 🗑
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| A smaller unit of flux density is called the | show 🗑
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| 1T=10,000 G | show 🗑
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| e.g. of flux density | show 🗑
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| show | external magnetic field
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| show | Ferromagnetic DiamagneticParamagnetic Dimagnetic
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| Ferromagnetic Material is any material that is ? attracted to a magnet | show 🗑
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| show | iron, cobalt, nickel
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| Paramagnetic material is any material that is ? attracted to a magnet? | show 🗑
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| Diamagnetic Material is any element which is ? repelled by a magnet | show 🗑
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| examples of diamagnetic material are: | show 🗑
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| Dimagnetic material (non-magnetic is any element which is not affected in any way by a magnet) examples are: | show 🗑
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| Permability also known as: | show 🗑
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| show | The easew/ which a substance can be magnetized
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| show | The ability of a magnet to retains it's magnetism.
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| show | low
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| examples of high permeability: | show 🗑
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| Substances which are low in permeability are ? in rentivity. | show 🗑
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| show | Hard steel
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| show | L1/L2= R1/R2
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| The formula for cross sectional area and inherent resistance: | show 🗑
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