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If the switch is closed at t=0, what is the current in the circuit?

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in Basic Electrical Engineering by (88.7k points)
If the switch is closed at t=0, what is the current in the circuit?

(a) 0A

(b) 10A

(c) 20A

(d) Infinity

This question was posed to me in a job interview.

My query is from Transients in CR Networks topic in portion Capacitance and Capacitors of Basic Electrical Engineering

1 Answer

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Best answer
Right answer is (b) 10A

The explanation: As soon as the switch is closed at t=0, the capacitor acts as a short circuit. The current in the circuit is:

I=V/R = 100/10 = 10A.

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