In a potentiometer arrangement, a cell of emf `1.25V` fives a balance point at `35.0` cm length of the wire. If the cell is replaced by another cell and the balance point shifts to `63.0cm,` what is the emf of the second cell ?

In a potentiometer arrangement, a cell of emf 1.25 V gives a balance point at 30.0 cm length the wire. If the cell is replaced by another and the balance point shifts to 60.0 cm, what the emf of the second cell ?

show a 2.0V potentiometer used for the determination of internal resistance of a 1.5V cell. The balance point of the cell in open circuit is 76.3 cm. When a resistor of 9.5Omega is used in the external circuit of the cell, the balance point shifts to 64.8 cm length of the potentiometer wire. Determine the internal resistance of the cell.

In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of 2 m when the cell is shunted by a 5 Omega resistance and is at a length of 3 m when the cell is shunted by a 10 Omega resistance, the internal resistance of the cell is then

What happens if the galvanometer and cell are interchanged at the balance point of the bridge ? Would the galvanometer show any current ?

In the potentiometer circuit shown in the figure the balance length AJ=60cm when switch S is open. When switch S is closed and the value of R= 5Omega , the b alance length AJ=50cm. The internal resistance of the cell C' is

In a potentiometer experiment it is found that no current passes through the galvanometer when the terminals of the cell are connected across 0.52 m of the potentiometer wire. If the cell is shunted by a resistance of 5Omega balance is obtained when the cell connected across 0.4m of the wire. Find the internal resistance of the cell.

A photoelectric cell is illuminated by a point source of light 1m away. When the source us shifted to 2m then-

A potentiometer wire of length 1000 cm has a resistance of 10 ohms. It is connected in series with a resistance and a cell of e.m.f 2 volts and of negligible internal resistance. A source of e.m.f 10 millivolts is balanced against a length of 40 cm of the potentiometer wire. What is the value of the external resistance?