Physics XII Content
Verification of Ohm’s Law
Ohm’s law can be verified by using a simple circuit as shown in fig. aside. A resistance R is connected in a series to a battery, ammeter and a rheostat. A voltmeter is connected in parallel across a fixed resistance R. When the key is closed, I current flows in the circuit and voltmeter and ammeter shows reading. By adjusting rheostat at different position different value of V and A are obtained. These values are noted and plotted on a graph paper and the graph shown below is obtained.