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A level OCR A Physics - Electricity - all key flashcard definitions for exam practise
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Ohm
Ohm
A unit of resistance. A component has a resistance of 1 ohm if a potential difference of 1V makes a current of 1A flow through it
Potential Difference
Potential Difference
Work done per unit charge
Resistivity
Resistivity
Resistance is multiplied by the cross-sectional area and divided by the length of the material measured in ohm meters.
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