Question

which law is proved in the experiment of electric current , potential difference a nd electric resistance? explain it.

Answer 1

I presume that you are referring to Ohm’s Law.

Resistance = Voltage / Current.

Actually, measuring the three quantities and checking the relationship is not proving the Law, just demonstrating it.

Answer 2

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Ohm's law is proved in the experiment. At constant temperature current flowing through a conductor is directly proportional the to potential difference across the conductor.