Aim- Measurement of Resistance by Wheatstone Bridge.
Apparatus- Galvanometer (0-10V), Decade Resistance Box, Resistance (4), Bread Board, Power Supply
Theory- The Wheatstone bridge works on the principle of null deflection, i.e. the ratio of their resistance is equal, and no current flows through the circuit. When the bridge is balanced, the galvanometer reads zero. This occurs when the ratio of the resistances in the arms of the bridge satisfies the equation:
