In the circuit shown capacitor C is initially fully dischargedR3and has a value of 20 µF.a) If R;= 850 0, R2= 1200 N, and R3= 1500 N, what is theR2equivalent resistance of the circuit?b) What is the time constant of this RC circuitc) If you close the switch, how much time will it take the capacitor to reach 40% charge if thebattery is at 12 V?

a) If R1= 850 N, R2= 1200 N, and R3= 1500 N, what is the equivalent resistance of the circuit? R2 b) What is the time constant of this RC circuit c) If you close the switch, how much time will it take the capacitor to reach 40% charge if the battery is at 12 V?

a) If R1= 850 N, R2= 1200 N, and R3= 1500 N, what is the equivalent resistance of the circuit? R2 b) What is the time constant of this RC circuit c) If you close the switch, how much time will it take the capacitor to reach 40% charge if the battery is at 12 V?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 53P: A 500 resistor, an uncharged 1.50F capacitor,and a 6.16-V emf are connected in series, (a) What is...

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Question

In the circuit shown capacitor C is initially fully discharged
R3
and has a value of 20 µF.
a) If R;= 850 0, R2= 1200 N, and R3= 1500 N, what is the
R2
equivalent resistance of the circuit?
b) What is the time constant of this RC circuit
c) If you close the switch, how much time will it take the capacitor to reach 40% charge if the
battery is at 12 V?

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