5) For the circuit below, the switch is initially open(and has been for a long time), and at t = 0 the switch is suddenly closed. After 20 ms, the voltage across the capacitor is 2.0 V. Remove the capacit and find the Thevenin equivalent voltage Va and resistance Ra of the remaining circuit (with the switch closed, of course). 200 6V 3k C 3k 300 200 Va = 6) What is the resistance R that goes into making the time constant t = RC for the above circuit ? Hint : Remember that we can reconnect the capacitor to the Thevenin equivalent circuit instead of the actual circuit to answer this question. Just sayin! R = 7) What is the capacitor voltage Vo a long time after the switch is closed? Hint : Again you can use the Thevenin equivalent circuit to answer this. Vo =

5) For the circuit below, the switch is initially open(and has been for a long time), and at t = 0 the switch is suddenly closed. After 20 ms, the voltage across the capacitor is 2.0 V. Remove the capacit and find the Thevenin equivalent voltage Va and resistance Ra of the remaining circuit (with the switch closed, of course). 200 6V 3k C 3k 300 200 Va = 6) What is the resistance R that goes into making the time constant t = RC for the above circuit ? Hint : Remember that we can reconnect the capacitor to the Thevenin equivalent circuit instead of the actual circuit to answer this question. Just sayin! R = 7) What is the capacitor voltage Vo a long time after the switch is closed? Hint : Again you can use the Thevenin equivalent circuit to answer this. Vo =

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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In the circuit shown in Figure 1, find the values of R and C such that the steady-state voltage across the capacitance and the time constant of the response for t> 0 are -10V and 20 seconds respectively. Place all the details of your design.
The switch in the circuit shown has been in position a for a longtime. At t=0, the switch moves from position a to position b. The switch is a make-before-break type; that is, the connection at position b is establishedbefore the connection at position a is broken, so the inductor current iscontinuous.3. Does this initial voltage make sense in terms of circuit behavior?
The switch in the circuit shown in has been in position a for a longtime. At t=0, the switch moves from position a to position b. The switch is amake-before-break type; that is, the connection at position b is establishedbefore the connection at position a is broken, so the inductor current iscontinuous.2. What is the initial voltage across the inductor just after the switch hasbeen moved to position b?
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An RL circuit has an emf given (in volts) by 4 cos t, a resistance of 100 ohms, an inductance of 4 henries, and no initial current. Find the time when the current is 2 A for the first time.
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