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Physics A
Electricity
Simple circuits
Ohm's law relationship
Ohm's law relationship
What You Need to Know
Recall and apply the relationship between current, resistance, and potential difference.
Understand that for some resistors
R
R
R
is constant, while for others it changes with current.
V
=
I
R
V = I R
V
=
I
R
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Practise with Past Papers
Key Terms & Definitions
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Current, resistance, potential difference
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Resistance variation
