Show that in a metre bridge, percentage error in the determination of an unknown resistance is minimum when the null point is at the center of the wire.

Show that the percentage error in the measurement of resistance by a metre bridge is minimum when the null point is near about the centre of the wire.

Which error of meter bridge is removed when the known and unknown resistances are interchanged?

In a metre bridge when the resistance in the left gap is 2Omega and an unknown resistance in the right gap, the balance point is obtained at 40 cm from the zero end. On shunting the unknown resistance with 2Omega find the shift of the balance point on the bridge wire.

The figure shows experimental set up of a meter bridge. When the two unknown resistances X and Y are inserted, the null point D is obtained 40 cm from the end A. When a resistance of 10 Omega is connected in series with X, the null point shifts by 10 cm. Find the position of the null point when the 10 Omega resistance is instead connected in series with resistance 'Y'. Determine the value of the resistance X and Y

In the metre bridge, the balancing length AB = 20 cm. The unknown resistance X is equal to