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Network Elements and the Concept of Circuit

  1. In the circuit shown below, S was initially open. At time t = 0, S is closed. When the current through the induc-tor is 6A, the rate of change of current through the resistor is 6 A/s. The value of inductor would be—


    1. 1H
    2. 2H
    3. 3H
    4. 4H
Correct Option: B

As we know that VL = L
di
& VR = i R = 6 × 1 = 6V
dt

18 = VL + VR
⇒ VL = 12V
12 = L
di
dt

⇒ L = 2H
di
6A/S
dt

Hence alternative (B) is the correct choice



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