Question

State Ohm’s law. Write the necessary conditions for its validity. How is this law verified experimentally?

What will be the nature of graph between potential difference and current for a conductor? Name the

physical quantity that can be obtained from this graph.​

Answer 1

Explanation:

Ohms law states that at a constant temperature, current ‘I’ through a conductor between two points is directly proportional to the potential difference or voltage ‘V’, across the two points. That is, V = IR.The necessary condition is that the temperature should be constant. The nature of the graph is a straight line.The physical quantity that can be determined is the gradient of the straight-line graph which is related to the resistance (R) of the conductor.