Two equal resistances are introduced in two gaps of a metre bridge.Find the shift in the null point if an equal resistance is connected in series with resistance in left gap .

Two unknown resistances are connected in two gaps of a meter-bridge. The null point is obtained at 40 cm from left end. A 30Omega resistance is connected in series with the smaller of the two resistances, the null point shifts by 20 cm to the right end. The value of smaller resistance in Omega is

State the uses of resistance connected in series with the galvanometer.

Two resistances are connected in the two gaps of a meter bridge. The balance point is 20 cm from the zero end. When a resistance 15 Omega is connected in series with the smaller of two resistance, the null point+ shifts to 40 cm . The smaller of the two resistance has the value.

Derive the expression for resistances connected in series.

Why is a resistance connected in series with a zener diode when used in a circuit?

Two resistance R1 and R2 connected in parallel, this equivalent resistance is.

A coil of unknown resistance is placed in the left gap of a metre bridge and a resistance R is placed in the right gap. The null point is obtained at a distance of 40 cm from the left end. When a resistance of 10 ohm is connected in series with the coil and the same resistance R is kept in the right gap,the null point is obtained at the centre of wire. Find the resistance of the coil.

Two resistance x and y in the two gaps of a meter bridge give a null point dividing the wire in the ratio 2:3 . If each resistance is increased by 30Omega ,the null point divides the wire in the ratio 5:6 . calculate each resistance.

On interchanging the resistances, the balance point of a meter bridge shifts to the left by 10 cm. The resistance of their series combination is 1k Omega . How much was the resistance on the left slot before interchanging the resistances ?

The resistances in the two arms of the metre bridge are 5Omega and "R "Omega , respectively. When the resistance R is shunted with an equal resistance, the new balance point is at 1.6" "l_(1) . The resistance R, is