A) The e.m.f. of the battery becomes equal to the e.m.f. of the experimental cell
B) The p.d. of the wire between the +ve end to becomes equal to the e.m.f. of the experimental cell
C) The p.d. of the wire between +ve point and jockey becomes equal to the e.m.f. of the battery
D) The p.d. across the potentiometer wire becomes equal to the e.m.f. of the battery
Correct Answer: B
Solution :
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