Fundamentals of Electric Circuits
6th Edition
ISBN: 9780078028229
Author: Charles K Alexander, Matthew Sadiku
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 6, Problem 71P
Show how you would use a single op amp to generate
If the integrating capacitor is C = 5 μF, obtain the other component values.
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At t=0 S switch is closed. Initially the capacitor was uncharged. What is
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Consider the following circuit. The initial voltage across the capacitor is 15V and the initial
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Chapter 6 Solutions
Fundamentals of Electric Circuits
Ch. 6.2 - What is the voltage across a 4.5-F capacitor if...Ch. 6.2 - If a 10-F capacitor is connected to a voltage...Ch. 6.2 - The current through a 100-F capacitor is i(t) = 50...Ch. 6.2 - Figure 6.11 For Practice Prob. 6.4. An initially...Ch. 6.2 - Under dc conditions, find the energy stored in the...Ch. 6.3 - Find the equivalent capacitance seen at the...Ch. 6.3 - Find the voltage across each of the capacitors in...Ch. 6.4 - If the current through a 1-mH inductor is i(t) =...Ch. 6.4 - The terminal voltage of a 2-H inductor is v = 10(1...Ch. 6.4 - Determine vC, iL, and the energy stored in the...
Ch. 6.5 - Calculate the equivalent inductance for the...Ch. 6.5 - In the circuit of Fig. 6.34, i1(t) = 3e2t A. If...Ch. 6.6 - The integrator in Fig. 6.35(b) has R = 100 k, C =...Ch. 6.6 - The differentiator in Fig. 6.37 has R = 100 k and...Ch. 6.6 - Design an analog computer circuit to solve the...Ch. 6 - What charge is on a 5-F capacitor when it is...Ch. 6 - Capacitance is measured in: (a)coulombs (b)joules...Ch. 6 - When the total charge in a capacitor is doubled,...Ch. 6 - Can the voltage waveform in Fig. 6.42 be...Ch. 6 - The total capacitance of two 40-mF...Ch. 6 - In Fig. 6.43, if i = cos 4t and v = sin 4t, the...Ch. 6 - A 5-H inductor changes its current by 3 A in 0.2...Ch. 6 - If the current through a 10-mH inductor increases...Ch. 6 - Inductors in parallel can be combined just like...Ch. 6 - Prob. 10RQCh. 6 - If the voltage across a 7.5-F capacitor is 2te3t...Ch. 6 - A 50-F capacitor has energy w(t) = 10 cos2 377t J....Ch. 6 - Design a problem to help other students better...Ch. 6 - A voltage across a capacitor is equal to [2 2...Ch. 6 - The voltage across a 4-F capacitor is shown in...Ch. 6 - The voltage waveform in Fig. 6.46 is applied...Ch. 6 - At t = 0, the voltage across a 25-mF capacitor is...Ch. 6 - A 4-mF capacitor has the terminal voltage v=...Ch. 6 - The current through a 0.5-F capacitor is 6(1 et)...Ch. 6 - The voltage across a 5-mF capacitor is shown in...Ch. 6 - A 4-mF capacitor has the current waveform shown in...Ch. 6 - A voltage of 45e2000t V appears across a parallel...Ch. 6 - Find the voltage across the capacitors in the...Ch. 6 - Series-connected 20- and 60-pF capacitors are...Ch. 6 - Two capacitors (25 and 75 F) are connected to a...Ch. 6 - The equivalent capacitance at terminals a-b in the...Ch. 6 - Determine the equivalent capacitance for each of...Ch. 6 - Find Ceq in the circuit of Fig. 6.52 if all...Ch. 6 - Find the equivalent capacitance between terminals...Ch. 6 - Find the equivalent capacitance at terminals a-b...Ch. 6 - Determine the equivalent capacitance at terminals...Ch. 6 - Obtain the equivalent capacitance of the circuit...Ch. 6 - Using Fig. 6.57, design a problem that will help...Ch. 6 - In the circuit shown in Fig. 6.58 assume that the...Ch. 6 - (a)Show that the voltage-division rule for two...Ch. 6 - Three capacitors, C1 = 5 F, C2 = 10 F, and C3 = 20...Ch. 6 - Given that four 10-F capacitors can be connected...Ch. 6 - Obtain the equivalent capacitance of the network...Ch. 6 - Determine Ceq for each circuit in Fig. 6.61....Ch. 6 - Assuming that the capacitors are initially...Ch. 6 - If v(0) = 0, find v(t), i1(t), and i2(t) in the...Ch. 6 - In the circuit in Fig. 6.64, let is = 4.5e2t mA...Ch. 6 - Obtain the Thevenin equivalent at the terminals,...Ch. 6 - The current through a 25-mH inductor is 10et/2 A....Ch. 6 - An inductor has a linear change in current from...Ch. 6 - Design a problem to help other students better...Ch. 6 - The current through a 12-mH inductor is 4 sin 100t...Ch. 6 - The current through a 40-mH inductor is i(t)= 0,...Ch. 6 - The voltage across a 50-mH inductor is given by...Ch. 6 - The current through a 5-mH inductor is shown in...Ch. 6 - The voltage across a 2-H inductor is 20(1 e2t) V....Ch. 6 - If the voltage waveform in Fig. 6.67 is applied...Ch. 6 - The current in a 150-mH inductor increases from 0...Ch. 6 - A 100-mH inductor is connected in parallel with a...Ch. 6 - If the voltage waveform in Fig. 6.68 is applied to...Ch. 6 - Find vC, iL, and the energy stored in the...Ch. 6 - For the circuit in Fig. 6.70, calculate the value...Ch. 6 - Under steady-state dc conditions, find i and v in...Ch. 6 - Find the equivalent inductance of the circuit in...Ch. 6 - An energy-storage network consists of...Ch. 6 - Determine Leq at terminals a-b of the circuit in...Ch. 6 - Using Fig. 6.74, design a problem to help other...Ch. 6 - Find Leq at the terminals of the circuit in Fig....Ch. 6 - Find the equivalent inductance looking into the...Ch. 6 - Find Leq in each of the circuits in Fig. 6.77....Ch. 6 - Find Leq in the circuit of Fig. 6.78. Figure 6.78...Ch. 6 - Determine Leq that may be used to represent the...Ch. 6 - The current waveform in Fig. 6.80 flows through a...Ch. 6 - (a) For two inductors in series as in Fig....Ch. 6 - In the circuit of Fig. 6.82, io(0) = 2 A....Ch. 6 - Consider the circuit in Fig. 6.83. Find: (a) Leq,...Ch. 6 - Consider the circuit in Fig. 6.84. Given that v(t)...Ch. 6 - In the circuit of Fig. 6.85, sketch vo. Figure...Ch. 6 - The switch in Fig. 6.86 has been in position A for...Ch. 6 - The inductors in Fig. 6.87 are initially charged...Ch. 6 - The current i(t) through a 20-mH inductor is...Ch. 6 - An op amp integrator has R = 50 k and C = 0.04 F....Ch. 6 - A 6-V dc voltage is applied to an integrator with...Ch. 6 - An op amp integrator with R = 4 M and C = 1 F has...Ch. 6 - Using a single op amp, a capacitor, and resistors...Ch. 6 - Show how you would use a single op amp to generate...Ch. 6 - At t = 1.5 ms, calculate vo due to the cascaded...Ch. 6 - Show that the circuit in Fig. 6.90 is a...Ch. 6 - The triangular waveform in Fig. 6.91(a) is applied...Ch. 6 - An op amp differentiator has R = 250 k and C = 10...Ch. 6 - A voltage waveform has the following...Ch. 6 - The output vo of the op amp circuit in Fig....Ch. 6 - Prob. 78PCh. 6 - Figure 6.93 presents an analog computer designed...Ch. 6 - Design an analog computer to simulate the...Ch. 6 - Design an op amp circuit such that vo=10vs+2vsdt...Ch. 6 - Your laboratory has available a large number of...Ch. 6 - An 8-mH inductor is used in a fusion power...Ch. 6 - A square-wave generator produces the voltage...Ch. 6 - An electric motor can be modeled as a series...
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- For RC circuits, the time constant is the time after which the capacitor is fully charged. Select one: True Falsearrow_forwardA 100-mH inductor is connected in parallel to the series connection of a variable resistorR and a 20-μF capacitor. The circuit is energized by a 120 Vac, 60-Hz supply. Find thevalue of R such that the total circuit current is 2.302305∠-86.6782°arrow_forwardSteady-state has been establish at t = 0'. Determine the discharge rates of the capacitor dvc(0*)/dt and the inductor di (0*)/dt. 12V t=0 20 6Varrow_forward
- You are asked to build an LC circuit that oscillates at 20 kHz. In addition, the maximum current must be 0.15 A and the maximum energy stored in the capaci- tor must be 1.0×10-5 J. What values of inductance and capacitance must you use?arrow_forwardA 100-mH inductor is connected in parallel to the series connection of a variable resistor R and a 20-µF capacitor. The circuit is energized by a 120 Vac, 60-Hz supply. Find the value of R such that the total circuit current is 2.3023052 - 86.6782° A.arrow_forwardIn an RL series circuit, the voltage across the inductor is v(r)= 2e and the current passing through the inductor is i(r)=80e“ mA. The initial energy stored in the inductor is, (a) 20 J (b) 20 mJ (c) 200 J (d) 200 mJarrow_forward
- The switch in the RC circuit shown is closed at t = 0, at which moment the capacitor has initial charge of q. = 500µC with the polarity indicated. Obtain i and q for t > 0. 1 kn 50 V 20 µF O i = 75e-50t q = 1000 - 1500e- -50t O i = 75e -50t q = 1000 + 1500e-50t µC O i = 7.5e-50t mA q = 1000 – 1500e- -50t O i = 75e-50t mA q = 1000 - 1500e-50t µCarrow_forwardQUESTION 7 0 17 27 37 47 57 67 77 87 97 107 117 127 137 147 157 I The graph above indicate which of the following choices in a simple RC circuit with a charging and discharging phase. Current through the capacitor Voltage across the resistor Voltage across the capacitor Current through the discharging resistor O O Oarrow_forward2) An LC circuit is made by attaching a 0.2221 H inductor is connected across a variable capacitor whose capacitance can be varied by turning a knob. a) . At what angle should the knob be set so that the circuit ocillates with a period of 8.000 ms? SuF OµF - 10µF b) What voltage battery do I need to charge up the capacitor to an initial charge of 87.60 µC? (assume the period is set to 8.000 ms) Сарасiance c) What is the maximum current in this LC Circuit? (all numbers 4 sig figs) (assume the initial charge is 87.60 µC)arrow_forward
- The value of C, if the energy stored in the capacitor in the figure equals the energy stored in the inductor is 12 V www 200 Q 100 Ω 0.1 Harrow_forwardWhat is the time constant of an RC circuit that contains two resistors connected in series with a single capacitor? a.) 1/RC, b.) RegC, c.) 1/le, d.) 1/ReC, e.) RCarrow_forwardThe RC circuit as shown in Figure has been connected for a long time. What is the potential difference across the capacitor? ON 2E 25E B) 1.5E D) E) 0arrow_forward
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