The diagram depicts an RC-circuit where C = 7.60 F, R0 = 24.5 , R1 = 13.5 , R2 =

Question

The diagram depicts an RC-circuit where C = 7.60 F, R0 = 24.5 , R1 = 13.5 , R2 = 24.5 and V = 2.00 Volts. The capacitor is initially uncharged.

1)What is the current through R1 immediately after the switch S is closed?

2)What is the current through R2 immediately after the switch S is closed?

3) What is the current through the capacitor immediately after the switch S is closed?

4) What is the current through R1 after the switch S has been closed for a very long time? Assume that the battery does not go dead.

Explanation / Answer

1) Rnet = Ro + R1*R2/(R1+R2) = 33.2 ohm

i = v/Rnet = 0.0602 A

2) current through R2 = i*R1/(R1+R2) =0.0214 A


3) same as current through R2 = 0.0214 A

4) here, current does not flow through R2. so, capacitor and R2 act as open ckt.

Rnet = Ro+R1 = 38

i = v/Rnet = 0.0526 A
here i = 0.0526 A flows through Ro and R1

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