In a potentiometer, balance point is obtained, when

Options

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 jockey 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

Answer

B