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Alternating Current

  1. ​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 the switch closed is​​
    1. 0.2 A ​
    2. ​2 A ​
    3. 0 ​
    4. 2 mA
Correct Option: B


At t = 0, no current flows through R1 and R3

Current through battery just after the switch closed is

i - ε= 18 = 2 A
R29



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