GCSE C21 P5 keyword Word Scramble
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Question | Answer |
opposes the movement of electrical charge | resistance |
unit for resistance | ohm |
unit for potential difference | volt |
unit for current | amp (ampere) |
standard unit for electrical energy transferred | joule |
unit for (large amounts of) electrical energy transferred | kilowatt-hour |
unit for electrical power | watt |
a flow of charge; how much charge passes a point each second, measured in amps | current |
indicates the push on each charge AND the energy transferred by each charge | voltage |
has negative charge, in metals there are lots that can move easily, carrying the current | electron |
transferred when a charge moves through a pd | energy |
has no free electrons, so doesn't conduct a current | insulator |
has lots of free electrons, so lets current flow through it easily | conductor |
how a changing magnetic field makes a voltage in a wire | induction |
device that can increase or decrease an alternating voltage | transformer |
a current or voltage that goes to and fro / back and forth | alternating |
produced by a flow of current in a coil | magnetic field |
current must pass through all components - one after another | series |
each electron will pass through one branch or another | parallel |
its resistance depends on the temperature | thermistor |
its resistance depends on the light level | LDR |
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