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.

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 percentage error in the measurement of m/B by a deflection magnetometer is minimum when deflection is near about 45^(@) .

For the accurate measurement of resistance by metre bridge, the null point should be obtained

Accuracy of a metrebridge is maximum when the null point is obtained at the midpoint of the bridge wire. This is because

Show that in a tangent galvanometer the percentage error in the measurement of current is minimum when the deflection is 45^(@) .

In the measurement of resistance by a meter-bridge, the current is necessarily reversed through the bridge wire to eliminate

Show that in a tangent galvanometer the percentage error in the measurment of current is a minimum when the deflection is 45^(@) .

The error in measuring the curent with tangent galvanometer is minimum when the deflection is about

Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is