Battery of negligible internal resistance
A coil of self inductance 7.5 mH and resistance of 30 W is placed across the terminals of a 12-V battery of negligible internal resistance. The current in this circuit after 50 ms is approximately:
A) 73 mA
B) 47 mA
C) 28 mA
D) 51 mA
E) 19 mA
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