For the network shown in the figure, the switch is moved from a to b at t = 0-. What is the value of voltage v(t)?

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UPSC ESE (Prelims) Electronics and Telecommunication Engineering 19 Feb 2023 Official Paper
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Answer (Detailed Solution Below)

Option 4 :
Free
ST 1: UPSC ESE (IES) Civil - Building Materials
20 Qs. 40 Marks 24 Mins

Detailed Solution

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Given that,

R1 = 4

R2 = 2

C = 1F

V = 6 volts

V(t) = 2 

Time constant = 2*1 = 2 seconds.

At t = 0, the switch moves to position b, starting the capacitor's charging process.

V(t) = V*(1-e^()

V(t) = 6 * (1-e^()

Here, option 4 is correct.

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