Questions
Figure shows a circuit that contains three identical resistors with resistance R = 9.0 each, two identical inductors with inductance L = 2.0 mH each, and an ideal battery with emf = 18 V The current 'i' through the battery just after the
switch closed is :
detailed solution
Correct option is B
At t = 0, inductor behaves as open circuit so, i = εR=2ATalk to our academic expert!
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A coil is wound as a transformer of rectangular cross-section. If all the linear dimensions of the transformer are increased by a factor 2 and the number of turns per unit length of the coil remain the same, the self inductance increased by a factor of
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