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1. |
A standard cell of 1.0185 V is used with a slide wire potentiometer. The balance was obtained at 60 cm. When an unknown emf was connected, the balance was obtained at 82 cm. The magnitude of unknown emf is |
A. | 1.39 V |
B. | 0.75 V |
C. | 13.9 V |
D. | 7.45 V |
Answer» B. 0.75 V | |