Physics · Current Electricity
Which statement best expresses Ohm's law for an ohmic conductor kept at a constant temperature?
- 1The current through a conductor is always independent of the potential difference across it
- 2The current through a conductor is directly proportional to the potential difference across it, if physical conditions remain unchanged✓
- 3The potential difference across a conductor is always inversely proportional to its resistance
- 4The resistance of a conductor is directly proportional to the current passing through it at all times
Correct answer
The current through a conductor is directly proportional to the potential difference across it, if physical conditions remain unchanged
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