A) For t=0- (before switch makes contact with A or B), what are the voltages and
ID: 1790970 • Letter: A
Question
A) For t=0- (before switch makes contact with A or B), what are the voltages and currents across R1, C1, and AB? Label your quantities and include units.
C) Suppose the switch is now making contact with terminal A, at t=0+ (just after switch is flipped) what are the voltages and currents across C1, R1, and V1? Remember to label quantities and include units.
D) Suppose we started with the circuit below having the switch in contact with terminal A for a very long time, for t=0- (before we flip the switch from A to B), what are the voltages and currents across V1, R1, and C1? Label your quantities and include units.
E) Suppose we started with the circuit below having the switch in contact with terminal A for a very long time, for t=0+ (just after we flip the switch from A to B), what are the voltages and currents across V1, R1, and C1? Label your quantities and include units.
Explanation / Answer
(A) for all, V = 0 and I = 0
(B) When connected for long time at A:
VC = V1 = 12 Volt
V1 = 12 Volt
VR1 = 0
current through all , I = 0
(C) Vc = 0
VR1 = 12 V
V1 = 12 V
current through all , I = 12 / 1 kohm = 12 mA
(D) When connected for long time at A:
VC = V1 = 12 Volt
V1 = 12 Volt
VR1 = 0
current through all , I = 0
(E)
When connected for long time at A:
VC = V1 = 12 Volt
VR1 = 12 V
current through all , I = 12 mA
(F) all V = 0
and I = 0
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