Question

tell me about ohms law

Answer 1

This relationship states that: The potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the "resistance", R. Ohm's Law is given by: V = I R where V is the potential difference between two points which include a resistance R.

Answer 2

According to Ohm's law, the current flowing in a conductor is directly proportional to the potential difference applied across its ends provided the physical conditions and the temperature of conductor remain constant.
                                     I α V ⇒ V = IR
Potential difference = current*resistence