For the arrangement of the potentimeter shown in the figure, The balance point is obtained at a distance `75 cm` from `A` when the key `k` is open
The second balance point is obtained at `60 cm` from `A` when the key `k` is closed. Find the internal resistance of the battery `E_(1)`.

The balance point is obtained at 40 cm from left end in meter bridge. Then the ratio of resistance in the gap is

Find the equivalent resistance of the network shown in the figure between the points A and B, when (a) the key is open (b) the key k is closed

Figure shows a 2.0V potentiometer used for the determination of internal resistance of a 1.5V cell , When the key is not inserted in the plug , the balance point is at 60 cm and in the closed circuit the balance point is at 50 cm. Find the internal resistance of the cell .

In the Figure , what will be the reading of the ammeter and voltmeter, when the key K is closed ? The internal resistance of the cell is zero.

In comparing the resistance of two cells P and Q with a sides wire bridge, a balance point is obtained when the sliding contact is 30 cm from the zero end of the wire. The resistances P and Q are interchanged and the balance is obtained at 120 cm from the same emf. Find the ratio of the resistance P and Q and the length of the bridge wire

In comparing the resistance of two cells P and Q with a sides wire bridge, a balance point is obtained when the sliding contact is 30 cm from the zero end of the wire. The resistances P and Q are interchanged and the balance is obtained at 120 cm from the same emf. Find the ratio of the resistance P and Q and the length of the bridge wire

When the balance point is obtained in the potentiometer, a current is drawn from?