# DC Response of an R-C Circuit MCQ’s

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This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “DC Response of an R-C Circuit”.

1. The expression of current in R-C circuit is?
a) i=(V/R)exp⁡(t/RC)
b) i=(V/R)exp⁡(-t/RC)
c) i=(V/R)-exp(⁡t/RC)
d) i=(V/R)-exp⁡(-t/RC)

2. In an R-C circuit, when the switch is closed, the response ____________
a) do not vary with time
b) decays with time
c) rises with time
d) first increases and then decreases

3. The current in the R-L circuit at a time t = 0+ is?
a) V/R
b) R/V
c) V
d) R

4. The time constant of an R-C circuit is?
a) RC
b) R/C
c) R
d) C

5.A series R-C circuit consists of resistor of 10 and capacitor of 0.1F as shown in the figure. A constant voltage of 20V is applied to the circuit at t = 0. What is the current in the circuit at t = 0?

a) 1
b) 2
c) 3
d) 4

6. The current equation in the circuit shown below is?

a) i=2(e-2t)A
b) i=2(e2t)A
c) i=2(-e-2t)A
d) i=2(-e2t)A

7. After how many time constants, the transient part reaches more than 99 percent of its final value?
a) 2
b) 3
c) 4
d) 5

8. The expression of current obtained from the circuit in terms of differentiation from the circuit shown below?

a) di/dt+i=1
b) di/dt+i=2
c) di/dt+i=3
d) di/dt+i=0

9. The expression of voltage across resistor in the circuit shown below is?

a) VR = 20(et)V
b) VR = 20(-e-t)V
c) VR = 20(-et)V
d) VR = 20(e-t)V

10. Determine the voltage across the capacitor in the circuit shown below is?

a) VC = 60(1-e-t)V
b) VC = 60(1+et)V
c) VC = 60(1-et)V
d) VC = 60(1+e-t)V

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