In the meter bridge circuit shown in figure-`3.281` find the length AC at null deflection in galvanometer.

In the meter bridge circuit shown in figure . Find the length AB for null deflection in galvaometer .

Find the current in the circuit shown in figure 3.158

Statement I: In the meter bridge experiment shown in figure, the balance length AC corresponding to null deflection of the galvanometer is x. If the radius of the wire AB is doubled, the balanced length becomes 4x. Statement II: The resistance of a wire is inversely proportional to the square of its radius.

The resistance wire AB in the balancing setup shown in figure- 3.292 is 10 cm long. When AC= 40 cm , no deflection occurs in the galvanometer. Find the unknown resistance R.

In the circuit of meter bridge shown in the figure.If null deflection is obtained at 40cm length of the wire as shown,the value of unknown resistance is

In the circuit shown in the following figure, find

In the meter bridge circuit shown, the null point is obtained at C (AC = x) on the wire AB. If the diameter of the wire AB is doubled, the position of the new null point C' will correspond to