Who among the following gave the law: “The potential difference across the ends of a resistor is directly proportional to the current through it, provided its temperature remains the same”.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → George Simon Ohm
The statement is Ohm’s law, given by the German physicist Georg Simon Ohm in 1827. Written as V = IR, it says the potential difference across a conductor is proportional to the current through it so long as its physical conditions, particularly temperature, do not change.
Joule gave the law of heating produced by a current, Oersted discovered the magnetic effect of an electric current, and Wöhler was the chemist who first synthesised urea.