Figure shows a circuit that contains three identical resistors with resistance R = 9.0 Ω each, two identical inductors with inductance L = 2.0 mH each, and an ideal battery with emf ε = 18 V The current 'i' through the battery just after theswitch closed is :
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a
0.2 A
b
2 A
c
0 A
d
2 mA
answer is B.
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Detailed Solution
At t = 0, inductor behaves as open circuit so, i = εR=2A
Figure shows a circuit that contains three identical resistors with resistance R = 9.0 Ω each, two identical inductors with inductance L = 2.0 mH each, and an ideal battery with emf ε = 18 V The current 'i' through the battery just after theswitch closed is :