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1. |
A wire of length 100 cm is connected to a cell of emf 2 V and negligible internal resistance. The resistance of the wire is 3 W. The additional resistance required to produce a potential drop of 1 milli volt per cm is [Kerala PET 2002] |
A. | 60 W |
B. | 47 W |
C. | Kirchhoff's first law (for currents meeting at a junction in an electric circuit) expresses the conservation of charge |
D. | 35 W |
Answer» D. 35 W | |