Electronics and Communication Engineering - Networks Analysis and Synthesis - Discussion

Discussion Forum : Networks Analysis and Synthesis - Section 1 (Q.No. 49)
49.
In figure, the current supplied by battery immediately after switching on the circuit is
1 A
4 A
10 A
0
Answer: Option
Explanation:

At t = 0, inductance behaves as open circuit.

Discussion:
3 comments Page 1 of 1.

Vidyasri said:   7 years ago
At t <0, no current will be there in the inductor.

As inductor doesn't allow the sudden change in current, the across it immediately after the switch is closed is zero.

Preetham said:   8 years ago
At t=0 there is no flow of current through inductor because inductor does not allow sudden change in current. So v=IR, I=20/20=1A.

Sravanthi said:   10 years ago
Both resistors in series R = 15+5 = 20.

V = 20.
V = IR.

I = V/R = 20/20.
I = 1 A.

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