What is the time constant of the circuit shown in Figure OQ28.7? Each of the five resistors has resistance R and each of the five capacitors has capacitance C. THe internal resistance of the battery is negligible.
(a) RC
(b) 5RC
(c) 10 RC
(d) 25 RC
(e) None of those answers
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An RC circuit consists of a resistor with resistance 1.0 kΩ, a 120-V battery, and two capacitors, C1 and C2, withcapacitances of 20.0 μF and 60.0 μF, respectively. Initially, the capacitors are uncharged; and the switch is closed at t = 0 s.
a. What is the current through the resistor a long time after the switch is closed? Recall that current is the charge per unit time that flows in a circuit.
b. What is the time constant of the circuit?
c. Determine the total charge on both capacitor's two-time constants after the switch is closed.
A series RL circuit with L = 3.00 H and a series RC circuit with C = 3.00 μF have equal time constants. If the two circuits contain the same resistance, R, (a) what is the value of R? (b) What is the time constant?
