Date Beam me up The circuit below has been in position for a long time. At time

Question

Date Beam me up The circuit below has been in position for a long time. At time t-0 the switch is thrown to position b. DATA: Vs -12 V. C- 10 mF, R- 20 w 2. a) What is the current through the resistor just BEFORE the switch is thrown? b) What is the current through the resistor just AFTER the switch is thrown? e) What is the charge across the capacitor just BEFORE the switch is thrown? d) What is the charge on the capacitor just AFTER the switch is thrown? e) What is the charge on the capacitor at time r-0.3 ms after the switch is thrown? ) Draw a graph of the charge over time after the switch is thrown.

Explanation / Answer

a) i = 0 A ,since the switch was in connection with battery for a long time so,current through resistor is zero

b) i = V/R = 12/20 = 0.6 A

c) Qmax = C*V = 10*10^-3*12 = 120*10^-3 C

d) Qmax = 120*10^-3 C

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