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 1, Problem 20P
Find Vo and the power absorbed by each element in the circuit of Fig. 1.31.
Figure 1.31
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1.10 The dependent source in Fig. 1.22 is:
(a) voltage-controlled current source
(b) voltage-controlled voltage source
(c) current-controlled voltage source
(d) current-controlled current source
6i,
I -Assume that a 12 V voltage drop occurs across an element from terminal 1 to terminal 2 and that a current
of -3 A enters terminal 2.
a) Specify the values of v and i for the polarity references shown in Fig. 1.6(a) and Fig. 1.6(c).
b) State whether the circuit inside the box is absorbing or delivering power.
c) How much power is the circuit absorbing or delivering?
Figure 1.6(a):
+=
i
Figure 1.6(c):
V
+
1
2
1
2
Using the Passive Sign Convention
Suppose you have selected the polarity references shown in Fig. 1.6(b).Your calculations for the current and voltage yield the followingnumerical results:
i=4 A and v=−10 V.Calculate the power associated with the circuit element and determinewhether it is absorbing or supplying power.
Chapter 1 Solutions
Fundamentals of Electric Circuits
Ch. 1.3 - Calculate the amount of charge represented by...Ch. 1.3 - Prob. 2PPCh. 1.3 - The current flowing through an element is i= 4A...Ch. 1.5 - To move charge q from point b to point a requires...Ch. 1.5 - Find the power delivered to the element in Example...Ch. 1.5 - A home electric heater draws 10 A when connected...Ch. 1.6 - Figure 1.16 For Practice Prob. 1.7 Compute the...Ch. 1.7 - If an electron beam in a TV picture tube carries...Ch. 1.7 - Referring to the residential rate schedule in...Ch. 1 - One millivolt is one millionth of a volt. (a) True...
Ch. 1 - The prefix micro stands for: (a) 106 (b) 103 (c)...Ch. 1 - The voltage 2.000,000 V can be expressed in powers...Ch. 1 - A charge of 2 C flowing past a given point each...Ch. 1 - The unit of current is: (a) coulomb (b) ampere (c)...Ch. 1 - Voltage is measured in: (a) watts (b) amperes (c)...Ch. 1 - Prob. 7RQCh. 1 - The voltage across a 1.1-kW toaster that produces...Ch. 1 - Which of these is not an electrical quantity? (a)...Ch. 1 - The dependent source in Fig. 1.22 is: (a)...Ch. 1 - How much charge is represented by these number of...Ch. 1 - Determine the current flowing through an element...Ch. 1 - Find the charge q(t) flowing through a device if...Ch. 1 - A total charge of 300 C flows past a given cross...Ch. 1 - Prob. 5PCh. 1 - The charge entering a certain element is shown in...Ch. 1 - The charge flowing in a wire is plotted in Fig....Ch. 1 - Prob. 8PCh. 1 - The current through an element is shown in (a) t =...Ch. 1 - A lightning bolt with 10 kA strikes an object for...Ch. 1 - A rechargeable flashlight battery is capable of...Ch. 1 - The charge entering the positive terminal of an...Ch. 1 - The voltage v(t) across a device and the current...Ch. 1 - The current entering the positive terminal of a...Ch. 1 - Prob. 16PCh. 1 - Figure 1.28 shows a circuit with four elements, p1...Ch. 1 - Find the power absorbed by each of the elements in...Ch. 1 - Find I and the power absorbed by each element in...Ch. 1 - Find Vo and the power absorbed by each element in...Ch. 1 - A 60-W incandescent bulb operates at 120 V. How...Ch. 1 - Prob. 22PCh. 1 - A 1.8-kW electric heater takes 15 min to boil a...Ch. 1 - A utility company charges 8.2 cents/kWh. If a...Ch. 1 - A 1.2-kW toaster takes roughly 4 minutes to heat...Ch. 1 - A cell phone battery is rated at 3.85 V and can...Ch. 1 - A constant current of 3 A for 4 hours is required...Ch. 1 - A 150-W incandescent outdoor lamp is connected to...Ch. 1 - An electric stove with four burners and an oven is...Ch. 1 - Reliant Energy (the electric company in Houston,...Ch. 1 - In a household, a business is run for an average...Ch. 1 - A telephone wire has a current of 20 A flowing...Ch. 1 - A lightning bolt carried a current of 2 kA and...Ch. 1 - Figure 1.32 shows the power consumption of a...Ch. 1 - The graph in Fig. 1.33 represents the power drawn...Ch. 1 - A battery can be rated in ampere-hours (Ah) or...Ch. 1 - A total of 2 MJ are delivered to an automobile...Ch. 1 - How much energy does a 10-hp motor deliver in 30...Ch. 1 - A 600-W TV receiver is turned on for 4 h with...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- a) Does 12 V(ε1) battery supply or absorb energy? Explain the reason b) What is energy transfer rate of battery with emf ε1? c)Does battery 4 V(ɛ2) supply or absorb energy? Explain the reason d)What is its energy transfer rate of the battery with emf ε2arrow_forward1. Problem 1.18: Find the power absorbed by each of the elements shown below. 10 V | = 10 A + 4 A P4 |14 A P2 P1 20 V 12 V P5 0.41 30 V P3arrow_forwardFind Vo and the power absorbed by each element in the circuit in Fig. 1.31arrow_forward
- 1.18 Calcule the power absorbed or supplied by each element in Fig. 1.29. 4 A + 6V- 1 4 A + 9V (+ 3 V (a) 1-3A +10V - 1 2 - 5V + (b) 24 V (+ 2 310 3 A 1arrow_forwardThe network shown in Figure 1.15 contains ideal batteries and current sources. Reduce this network to a single source between terminals 1 and 2. 2A 3V 4V 1V 10V 1A 2A 2Varrow_forwardFind the power absorbed by each of the elements in Fig. 1.26. I= 10 A 10 V 8 V 4 A P2 14 A P4 P5 30 V Pi 20 V P3 12 V 0.41 Fgure 1.26arrow_forward
- Find and the power absorbed by each element inthe circuit of Fig. 1.31.arrow_forwardOhm's law describes the relation of voltage difference and current passing across an element. Select one: True Falsearrow_forwardApply the E-shift operation to the resistive network shown in Figure 1.79 and calculate the value of the voltage Vs across resistor Rs. + Vs R, 2.50 R2 R, A 30 62 E, 18V R, 120 Figure 1.79 Resistive network with a batteryarrow_forward
- 1.11 How much energy is imparted to an electron as it flows through a 6 V battery from the positive to the negative terminal? Express your answer in attojoules.arrow_forwardFig. 1.32 H.W.: Consider the circuit of Fig. 1.33. (a) If Rout = 3 k2, find the power delivered to it. 20 V 40 V %3D (b) What is the maximum power that can be delivered to any Rout? 30 V (c) What two different values of Rout will have exactly 20 mW 2 k delivered to them?arrow_forward11. A 12V battery source with 1 point equivalent power of 20 watts can move 8 coulombs of charge at what time in seconds? * O 4.8 sec. O 30 sec. O 13.33 sec. O 0.2083 sec.arrow_forward
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