Questions
In the given potentiometer circuit, the resistance of the potentiometer wire AB is R0. C is a cell of internal resistance r. The galvanometer G does not give zero deflection for any position of the jockey J. Which of the following cannot be a reason for this?
detailed solution
Correct option is A
If e.m.f of C is greater than the e.m.f. of D,Ir = 0so r does not play any role of zero deflection in galvanometer.Talk to our academic expert!
Similar Questions
For comparing the e.m.f.'s of two cells with a potentiometer, a standard cell is used to develop a potential gradient along the wires. Which of the following possibilities would make the experiment unsuccessful?
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