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Unit 7

Electricty and Magnetism Vocab

What is a charged particle called? Ion
unbalanced charges on the surface of a material (stays charged) Static Charge
the force of attraction or repulsion between charged objects Electric Force
the space around a charged object with flowing electrons that exerts a force Electric Field
an object or divice that does not easily conduct electricity Insulator
When charges move freely through a material it is then called? Conductor
the release of stored energy Electric discharge
a region around a magnetic material or a moving electric charge within which the force of magnetism acts magnetic field
The atoms inside of a material, that when aligned causes magnetism magnetic Domain
the region surrounding the Earth with a magnetic field, it can protect us from solar flares magnetosphere
the rate at which charges pass a given point electric current
charged particles flowing through a wire circuit
the potential electrical difference between two points measured in volts voltage
resistance(in ohms) is equal to volts divided by current (in amps) Ohm`s Law
a wire where all parts are connected one after another in a loop and where if 1 bulb goes out, they will all go out series circuit (draw or design it)
a wire loop that is connected in such a branched way that if one bulb goes out the current will still flow through the other bulbs and the rest of the bulbs will not go out parallel circuit (draw or design it)
the rate at which electrical energy does work or provides power where Power is equal to Voltage multiplied by Current. calculates Electric Power P=VI
in ohms, it is a measurement of opposition to flow of electrical current Resistance
What is a two way current, 120 charges per second or 60 cycles, from a spinning magnet in a coil called? Alternating current (AC)
a one way current like a battery is what type of current Direct current (DC)
something that increases or decreases the voltage of a current Transformer
A solenoid is a copper wire wrapped around an iron core that when electricity is added it acts as a magnet. What else is it called? Electromagnet
natural electrical phenomenon that appears as a reddish or greenish light at the poles of the earth. Aurora (Borealis or Australis)
Please understand the magnetosphere the suns particles and the collisions with elements (see notebook for full description.) How is an Aurora created?
V=IR Calculate Volts
V=IR Calculate amps of current
V=IR calculate Ohms of resistance
Review Ohms Law Know your units!