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1. |
A coil of self-inductance 50 henry is joined to the terminals of a battery of e.m.f. 2 volts through a resistance of 10 ohm and a steady current is flowing through the circuit. If the battery is now disconnected, the time in which the current will decay to 1/e of its steady value is [MP PMT 1996] |
A. | 500 seconds |
B. | 50 seconds |
C. | 5 seconds |
D. | 0.5 seconds |
Answer» D. 0.5 seconds | |