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