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21 Cards in this Set
- Front
- Back
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Electric Field
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The field around electrically charged particles that exerts a force on other charged particles.
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Static electricity
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The build up of charges on an objects
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Friction
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The transfer of electrons from one object to the other by rubbing
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Conduction
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The transfer of electrons from one charged particle to another charged particle by directs contact.
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Induction
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The movement of electrons to one part of an abject by the electric field to another object
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The Law of conservation of charge
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Electrons are not created or destroyed. When one object looses an electron another one gains them.
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Static discharge
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The loss of electricityas electric charges move off of an object.
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Electroscope
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An instrument that can detect electric charge.
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Electrical potential
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The potential energy per unit of electric charge
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Potential difference
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The difference of electrical potential between two places.
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Voltage
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The measure of unit in a volt
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voltage source
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creates potential difference in an electric circuit.
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Voltmeter
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a device that measures voltage or potential difference
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Ammeter
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A device that measure current--unit of amps
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ohms Law
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Resistave is equal to voltage divided by the current! R+v/I
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Series circuit
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All parts of an electric circuit conected on after the other
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Parallel circuit
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When the different parts of the circuit are on separate branches
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Short circuit
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a connection that allows current to take an unintended path
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lightning rod
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A metal rod on the roof of a building to protect it, letting the charges flow through rod, then the wire and then into the ground
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Fuse
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A device that contains a thin strip of metal that will melt if too much flows through it
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Circuit Breaker
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A safety device that uses electromagnet to shut off the circuit when the current gets too high
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