The EMF of the cell is balance against a length of 217cm of a potentiometer wire When the cell - Physics - Current Electricity

Question

The EMF of the cell is balance against a length of 217cm of a
potentiometer wire When the cell is shunted by a resistance of
15ohm, the balancing length is 200cm Find the internal resistance
of the cell

Vipra Mishra · Accepted Answer

Dear student,r=l1-l2l2 Rl1=217 cm = 2
17 ml2=200 cm = 2 mR=15 ohmr=2 17-2
002×2r=0 17 ohmRegards

The EMF of the cell is balance against a length of 217cm of a potentiometer wire. When the cell is shunted by a resistance of 15ohm, the balancing length is 200cm. Find the internal resistance of the cell.