Electricity and Circuits (EdExcel)

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8 Terms

1
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what are conductors?

they are components that allow the charge to pass through them

2
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what is current?

flow of charges

3
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what is EMF?

the potential difference across battery

4
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what is potential difference?

it is the work done in driving a charge

5
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what is resistance?

it is the opposition to current

6
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state ohm’s law

resistance is directly proportional to current when physical conditions e.g temperature are constant.

7
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what is electrical power?

it is the rate of energy transfer

8
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what is a diode?

a component that allows current to pass in one direction only.

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