(a) Just after the circuit is completed, what is the voltage drop across the cap

Question

(a) Just after the circuit is completed, what is the voltage drop across the capacitor?
V

(b) Just after the circuit is completed, what is the voltage drop across the resistor?
V

(c) Just after the circuit is completed, what is the charge on the capacitor?
C

(d) Just after the circuit is completed, what is the current through the resistor?
A

(e) A long time after the circuit is completed (after many time constants) what are the values of the quantities in parts (a) — (d)?

Explanation / Answer

a)

Just after the circuit is completed , Capacitor has no charge stored , hence voltage across the capacitor = 0

b)

Voltage across the resistor = voltage of the battery = 135 volts

c)

Charge on capacitor = 0 since there is no Voltage across capacitor

d)

current through resistor = i = V/R = 135 / 8000 = 0.017 A

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