In potentiometer a balance point is obtained, when
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 of battery to jockey becomes equal to the e.m.f. of the experimental cell
C. the p.d. of the wire between +ve point of cell 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
In potentiometer a balance point is obtained, when
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 of battery to jockey becomes equal to the e.m.f. of the experimental cell C. the p.d. of the wire between +ve point of cell 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