State Ohm's law write the necessary condition 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
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Answer:
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 ahould 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.
Ohm's law :- The potential difference across the ends of a resistor is directly proportional to the current through it, provided it's temperature remains the same.
The conditions for its validity is temperature and all other parameters should be constant.
The nature of the graph is a straight line passing through the origin.
Resistance is the physical quantity that can be determined from the graph.
V=IR
Voltage and current is always constant..
May it helps you..