GCSE Physics 2: What condition is crucial for the direct proportionality of current and potential difference in a fixed resistor?

Question

What condition is crucial for the direct proportionality of current and potential difference in a fixed resistor?

daavide · Accepted Answer

The temperature must remain constant for the current to be directly proportional to the potential difference in a fixed resistor.

What condition is crucial for the direct proportionality of current and potential difference in a fixed resistor?