Question

For a cell of e.m.f. 2 V, a balance is obtained for 50 cm of the potentiometer wire. If the cell is shunted by a 2 ohm resistor and the balance is obtained across 40 cm of the wire, then the internal resistance of the cell is *<br /><br />2 points<br /><br />(a) 1 ohm<br />(b) 0.5 ohm<br />(c) 1.2 ohm<br />(d) 2.5ohm<br /><br />​

Answer 1

Answer:

50 cm of the potentiometer wire. If the cell is shunted by a 2 ohm resistor and the balance is obtained across 40 cm of the wire, then the internal resistance of the cell is *<br /><br />2 points<br /><br />(a) 1 ohm<br />(b) 0.5 ohm<br />(c) 1.2 ohm<br />(d) 2.5ohm<br /><br />