Question

The switch on an RC circuit is closed at t = 0. Part A Given that...

The switch on an RC circuit is closed at t = 0.

Part A

Given that E = 9.0 V , R = 130 Ω and C = 25 μF , how much charge is on the capacitor at time t = 4.2 ms ?

Express your answer using two significant figures.

answer in μC

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Answer #1

Concept - use equation for charging of an RC circuit to find the required charge at the given time as shown below

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Check the answer and let me know immediately if you find something wrong or missing... I will rectify the mistakes asap if any

T RC, CVo 22S uLC Oo e t/ 4.-2 ma)/RC = , e 62 uc

T = RC, Bo = CVo = 25up) @v) = 225 uc @t) = B. e- tlt = Q. e-4-2ms)/RC = [62] uc

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