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1. |
The resistance of a 5 cm long wire is 10 W. It is uniformly stretched so that its length becomes 20 cm. The resistance of the wire is [MH CET 2002] |
A. | 160 W |
B. | 80 W |
C. | 40 W |
D. | 20 W |
Answer» B. 80 W | |