1. The switch in the circuit in Fig. 1 has been open for a long time before closing att=0.(a) Find a, wo and the roots(b) Find v(0) and i(0)(c) Find v(t)30 20.4 H40 Vt = 050 N20 µFFig. 1

Answered: 1. The switch in the circuit in Fig. 1…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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In the circuit of the figure below, the switch S has been open for a long time. It is then suddenly closed. Take = 10.0 V, R1 = 43.0 kΩ, R2 = 180 kΩ, and C = 14.0 µF. (a) Determine the time constant before the switch is closed. (b) Determine the time constant after the switch is closed. (c) Let the switch be closed at t = 0. Determine the current in the switch as a function of time. (Assume I is in A and t is in s. Do not enter units in your expression. Use the following as necessary: t.) I keep messing up part C. any help you can give and explain would be appreciated.
For the circuit shown in the figure below, we wish to find the biasing current Ic. Knowing that the current flowing through the 12k2 resistor is much higher than the base current (IR >> IB), V₁= 26mV and Is1 = 3 x 10-16 A, calculate lc Vcc=2.5 V 1kQ 12 ΚΩΣ 13 ΚΩΣ +9₁ 0.5 V- Select one: O a. Ic 69 μA O b. None of these O c. lc 6.9 mA O d. lc = 0.69 mA
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Q.1) The switch has been in position 'A' for long time. Assume that the switch moves instantaneously from 'A' to 'B' at t=0.Find v for t>0. 5 ΚΩ A В 10 µF 40 V 2 k2 Q.2) Assuming that the switch in given figure has been in position A for a long time and is moved to position B at t=0, find v.(1) for t2 0. 20 k2 + A 2 mF v,(t) 12 V 40 k2 30 kN
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The current in the circuit in (Figure 1) is known to be io = 50e-8000t (cos 6000t + 2 sin 6000t) mA for t > 0+, where t is in seconds. Suppose that R = 200 N. Figure + 1500 nF R 1 of 1 ₂320 mH Find v₁ (0+). Express your answer to three significant figures and include the appropriate units. v₁ (0+) = Submit Part B 0 μA Value Request Answer Units ? Find v2 (0+). Express your answer to three significant figures and include the appropriate units.
At the moment that the switch is close in Fig. 1, i.e. t = 0, (a) find the equivalent resistance between points A and B, and (b) find the current flowing through each of the resistors in the circuit. After the switch is closed for a long time, i.e. t->∞, (c) find the equivalent resistance between points A and B, and (d) find the current flowing through each of the resistors in the circuit. (e) What is the charge on each capacitor and the energy in the inductor after the switch is closed for a long time, i.e. t-›oo?

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1. The switch in the circuit in Fig. 1 has been open for a long time before closing at t=0. (a) Find a, wo and the roots (b) Find v(0) and i(0) (c) Find v(t) 30 2 0.4 H 40 V t = 0 50 N 20 µF Fig. 1