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23 Cards in this Set

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  • Back
semiconductor
a substance that holds its electrons in a way that allows a partial flow of electricity
load
the resistive devices in an electrical circuit
Ohm's law
voltage equals the current multiplied by the resistance
circuit breaker
a safety device that switches to break a circuit if current becomes too high
electroscope
a device that detects charges
coulomb (C)
the unit of electrical charge
electric current
electricity that involves continuously moving charges
induction
charging an object by shifting the parths of its electrons
short circuit
a situation in which an electrical current passes through a path shorter than the entire circuit
watt (W)
The SI unit of power; 1 joule of energy per second
amperes (A) or amp
the unit used to measure the amount of current that flows past a point in one second
circuit
a circular conducting path
resistor
any object that resists the flow of electricity
switch
a device that can be used to break (open or close) a circuit
kilowatts (kW)
1000 watts
series circuit
a situation in which an electrical current passes through a path shorter than the entire circuit
law of charges
like charges repel; unlike charges attract
ohm
the unit used to measure resistance
fuses
a safety device that melts to break a circuit if current becomes too high
static electricity
the effects produced by stationary charges
volts (V)
the measure of the difference between electrical potentials
parallel circuit
a circuit with two or more paths for the electrons in it to follow
capacitor
an object or device that stores an electric charge