Questions
A coil has an inductance of 2.5 H and a resistance of If the coil is suddenly connected across a 6.0 V battery then the time required for the current to rise 0.63 of its final value is
detailed solution
Correct option is D
i=ER(1-e-Rt/L)=Im(1-e-Rt/L) When i=0.63Im we get t=LR=2.50.5=5sTalk to our academic expert!
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In the circuit shown, one of the inductors used is ideal. The potential difference across the batteries is10 V. The current drawn from the battery at steady state, after the switch is closed is
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