Practice mode Current Electricity

For an ohmic conductor at constant temperature, what does a graph of current against potential difference look like?

Correct answer C. A straight line through the origin with gradient 1/R

Explanation

For an ohmic conductor I = V/R with R constant, so an I against V graph is a straight line through the origin. Its gradient is I/V = 1/R, the conductance.

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For an ohmic conductor at constant temperature, what does a graph of current against potential difference look like?

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For an ohmic conductor at constant temperature, what does a graph of current against potential difference look like?

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