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ElectricityMagnetism
Electricity magnetism
| Question | Answer |
|---|---|
| Electric force | The attractive or repulsive interaction between any two charged objects |
| Coulombs law | the force between two electrical charges is proportional to the product of the charges and inversely proportional to the square of the |
| electric field | A field that surrounds every electric charge |
| electric field lines | lines that point in the direction that a positive charge would move when in the presence of an electric field |
| electricity | movement of electrons through material |
| electrical conductor | a material that can conduct electricity |
| electrical insulator | a material that cannot conduct electricity |
| semiconductor | materials that with enough energy can conduct electricity |
| superconductor | materials whose conductivity resistivity decreases to zero when the temp decreases |
| static electricity | excess positive or negative charges on an objects surface |
| friction | the resistance that one surface or object encounters when moving over another. |
| induction | production of an electromotive force across an electrical conductor in a changing magnetic field. |
| conduction | the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts |
| current electricity | the movement of electrons through a wire |
| current | flow of electrons through a wire |
| resistance | a force that counteracts the flow of current |
| voltage | The "pressure" that pushes electricity |
| ampere | a measure of the amount of electric charge in motion per unit time |
| coulomb | the quantity of electricity transported in one second by a current of one ampere |
| potential difference | the difference in electric potential (V) between the final and the initial location when work is done upon a charge to change its potential energy |
| volt | a unit of electric potential, also known as electromotive force |
| Ohm's law | the principle that the electric current passing through a conductor is directly proportional to the potential difference across it, provided that the temperature remains constant |
| ohms | The SI derived unit used to measure the electrical resistance of a material or an electrical device |
| resistivity | electrical resistance of a conductor of unit cross-sectional area and unit length |
| circuit | an interconnection of electrical components or a model of such an interconnection, consisting of electrical elements |
| series circuit | a path along which the whole current flows through each component |
| surge protector | an electrical device that is used to protect equipment against power surges and voltage spikes while blocking voltage over a safe threshold |
| circuit diagram | a graphical representation of an electrical circuit |
| switch | an electrical component that is used to turn on and turn off any equipment like television, washing machine, lights, fans, etc |
| fuse | A strip or wire of metal inserted in an electric circuit, which melts (or 'blows') and so interrupts the circuit when the current increases beyond a certain safe strength. |
| parallel circuit | A parallel circuit comprises branches so that the current divides and only part of it flows through any branch |
| circuit breaker | an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload of electricity or short circuit |
| bar magnet | A magnet is a material or object that produces a magnetic field |
| de-magnetize | to deprive of magnetic properties. |
| magnetic field | A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials |
| magnitite | a mineral whose primary component is an iron oxide that contains equal amounts of iron(II) and iron(III) |
| lines | path followed by an electric charge free to move in an electric field or a mass free to move in a gravitational field, or generally any appropriate test particle in a given force field |
| compass | an instrument which is used to find the direction of a magnetic field |
| lodestone | a type of compass |
| electromagnetic force | the force of electricity and magnetism |
| electromagnet | a device that becomes magnetic when energy flows through it |
| alternating current | current that has directional change |
| direct current | current that comes from batteries, more direct |
| Magnetic Field Lines | lines that point from the north to the south pole of the magnet |
Created by:
Jwooten07
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