MCQ
In potentiometer a balance point is obtained, when:
- AThe e.m.f. of the battery becomes equal to the e.m.f of the experimental cell.
- BThe p.d. of the wire between the +ve end of battery to jockey becomes equal to the e.m.f. of the experimental cell.
- CThe p.d. of the wire between +ve point of cell and jockey becomes equal to the e.m.f. of the battery.
- DThe p.d. across the potentiometer wire becomes equal to the e.m.f. of the battery.
