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| field that surrounds a magnet and exerts a magnetic force on other magnets |
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| group of atoms whose fields point in the same direction |
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| region of space affected by Earth's magnetic field |
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| magnet created by wrapping a current-carrying wire around an iron core |
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| electric current that changes its direction repeatedly |
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| electric current that only flows in one direction |
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| light display that occurs when charged particles trapped in the magnetosphere collide with Earth's atmosphere above the poles |
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| device that uses a magnetic field to turn kinetic energy into electrical energy |
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| device used to increase or decrease the voltage of an alternating current |
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| a measure of the amount of electrical potential energy an electron flowing in a circuit can gain; measured in volts (V) |
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| a measure of the amount of electrical potential energy an electron flowing in a circuit can gain; measured in volts (V) |
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| a conductor that has no resistance to the flow of electrons |
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| a machine that uses a magnetic field to create pictures of the inside human body |
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