Fundamentals of Electric Circuits
6th Edition
ISBN: 9780078028229
Author: Charles K Alexander, Matthew Sadiku
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 2, Problem 2RQ
To determine
Calculate the resistance of a heater.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
When the lights of a car are switched on, an ammeter in series with them reads 7.01 A and a voltmeter connected across them reads
12.0 V (see the figure). When the electric starting motor is turned on, the ammeter reading drops to 5.91 A and the lights dim
somewhat. If the internal resistance of the battery is 0.0571 and that of the ammeter is negligible, what are (a) the emf of the battery
and (b) the current through the starting motor (in A) when the lights are on?
S
Lights
Starting
S
motor
V
HW
(a) Number
Units
(b) Number
i
Units
For a Darsnival device with a moving coil prepared to read the electrical
resistance, calculate the value of Rx in the following figure, if the device
reading is in the middle of the scale.
= 50 µA
R= 4.6 k2
Rm =2 k2
R= 1 k2
Ra-500 2
R.
E = 15V
3. For the circuit shown, both meters (voltmeter and ammeter) are idealized, the
battery has no appreciable internal resistance, and the ammeter reads 1.25 A.
(a) What does the voltmeter read?
25.0 0
1500
10.00 (b) What is the emf e of the battery?
45.0 1
15.00
www
35.0n E=?
Chapter 2 Solutions
Fundamentals of Electric Circuits
Ch. 2.2 - The essential component of a toaster is an...Ch. 2.2 - For the circuit shown in Fig. 2.9, calculate the...Ch. 2.2 - A resistor absorbs an instantaneous power of 30...Ch. 2.3 - How many branches and nodes does the circuit in...Ch. 2.4 - Find v1 and v2 in the circuit of Fig. 2.22. Figure...Ch. 2.4 - Find vx and vo in the circuit of Fig. 2.24. Figure...Ch. 2.4 - Find vo and io in the circuit of Fig. 2.26. Figure...Ch. 2.4 - Find the current and voltages in the circuit shown...Ch. 2.6 - By combining the resistors in Fig.2.36, find Req....Ch. 2.6 - Find Rab for the circuit in Fig.2.39. Figure 2.39...
Ch. 2.6 - Calculate Geq in the circuit of Fig.2.41. Figure...Ch. 2.6 - Find v1 and v2 in the circuit shown in Fig. 2.43....Ch. 2.7 - Transform the wye network in Fig. 2.51 to a delta...Ch. 2.7 - For the bridge network in Fig. 2.54, find Rab and...Ch. 2.8 - Refer to Fig. 2.55 and assume there are six light...Ch. 2.8 - Following the ammeter setup of Fig. 2.61. design...Ch. 2 - The reciprocal of resistance is: (a) voltage (b)...Ch. 2 - Prob. 2RQCh. 2 - Prob. 3RQCh. 2 - The maximum current that a 2W, 80 k resistor can...Ch. 2 - Prob. 5RQCh. 2 - The current I in the circuit of Fig. 2.63 is: (a)...Ch. 2 - The current I0 of Fig. 2.64 is: (a) 4 A (b) 2 A...Ch. 2 - In the circuit in Fig. 2.65, V is: (a) 30 V (b) 14...Ch. 2 - Which of the circuit in Fig. 2.66 will give you...Ch. 2 - In the circuit of Fig. 2.67, a decrease in R3...Ch. 2 - Design a problem, complete with a solution, to...Ch. 2 - Find the hot resistance of a light bulb rated 60...Ch. 2 - A bar of silicon is 4 cm long with a circular...Ch. 2 - (a) Calculate current i in Fig. 2.68 when the...Ch. 2 - For the network graph in Fig. 2.69. find the...Ch. 2 - In the network graph shown in Fig. 2.70, determine...Ch. 2 - Determine the number of branches and nodes in the...Ch. 2 - Design a problem, complete with a solution, to...Ch. 2 - Find i1, i2, and i3 in Fig. 2.73. Figure 2.73 For...Ch. 2 - Determine i1 and i2 in the circuit of Fig. 2.74....Ch. 2 - In the circuit of Fig. 2.75, calculate V1 and V2....Ch. 2 - In the circuit in Fig. 2.76, obtain v1, v2, and...Ch. 2 - For the circuit in Fig. 2.77, use KCL to find the...Ch. 2 - Given the circuit in Fig. 2.78, use KVL to find...Ch. 2 - Calculate v and ix in the circuit of Fig. 2.79....Ch. 2 - Determine Vo in the circuit in Fig. 2.80. Figure...Ch. 2 - Obtain v1 through v3 in the circuit of Fig. 2.81....Ch. 2 - Find I and V in the circuit of Fig. 2.82. Figure...Ch. 2 - From the circuit in Fig. 2.83, find I, the power...Ch. 2 - Determine io in the circuit of Fig. 2.84. Figure...Ch. 2 - Find Vx in the circuit of Fig. 2.85. Figure 2.85...Ch. 2 - Find Vo in the circuit in Fig. 2.86 and the power...Ch. 2 - In the circuit shown in Fig. 2.87, determine Vx...Ch. 2 - For the circuit in Fig. 2.88, find Vo/Vs in terms...Ch. 2 - For the network in Fig. 2.89, find the current,...Ch. 2 - For the circuit in Fig. 2.90, io = 3 A. Calculate...Ch. 2 - Calculate Io in the circuit of Fig. 2.91. Figure...Ch. 2 - Design a problem, using Fig. 2.92, to help other...Ch. 2 - All resistors (R) in Fig. 2.93 are 10 each. Find...Ch. 2 - For the circuit in Fig. 2.95, determine i1 to i5....Ch. 2 - Find i1 through i4 in the circuit in Fig. 2.96....Ch. 2 - Obtain v and i in the circuit of Fig. 2.97. Figure...Ch. 2 - Using series/parallel resistance combination, find...Ch. 2 - Calculate Vo and Io in the circuit of Fig. 2.99....Ch. 2 - Find i and Vo in the circuit of Fig. 2.100. Figure...Ch. 2 - Given the circuit in Fig. 2.101 and that the...Ch. 2 - Find Req and io in the circuit of Fig. 2.102....Ch. 2 - Evaluate Req looking into each set of terminals...Ch. 2 - For the ladder network in Fig. 2.104, find I and...Ch. 2 - If Req = 50 in the circuit of Fig. 2.105, find R....Ch. 2 - Reduce each of the circuits in Fig. 2.106 to a...Ch. 2 - Calculate the equivalent resistance Rab at...Ch. 2 - For the circuits in Fig. 2.108, obtain the...Ch. 2 - Find the equivalent resistance at terminals a-b of...Ch. 2 - Find I in the circuit of Fig. 2.110. Figure 2.110Ch. 2 - Find the equivalent resistance Rab in the circuit...Ch. 2 - Convert the circuits in Fig. 2.112 from Y to ....Ch. 2 - Transform the circuits in Fig. 2.113 from to Y....Ch. 2 - Design a problem to help other students better...Ch. 2 - Obtain the equivalent resistance at the terminals...Ch. 2 - For the circuit shown in Fig. 2.116, find the...Ch. 2 - Obtain the equivalent resistance Rab in each of...Ch. 2 - Consider the circuit in Fig. 2.118. Find the...Ch. 2 - Calculate I0 in the circuit of Fig. 2.119. Figure...Ch. 2 - Determine V in the circuit of Fig. 2.120. Figure...Ch. 2 - Find Req and I in the circuit of Fig. 2.121....Ch. 2 - The 150 W tight bulb in Fig. 2.122 is rated at 110...Ch. 2 - If the three bulbs of Prob. 2.59 are connected in...Ch. 2 - As a design engineer, you are asked to design a...Ch. 2 - Prob. 62PCh. 2 - If an ammeter with an internal resistance of 100 ...Ch. 2 - The potentiometer (adjustable resistor) Rx in Fig....Ch. 2 - Design a circuit that uses a dArsonval meter (with...Ch. 2 - A 20-k/V voltmeter reads 10 V full scale. (a) What...Ch. 2 - (a) Obtain the voltage Vo in the circuit of Fig....Ch. 2 - (a) Find the current I in the circuit of Fig....Ch. 2 - A voltmeter used to measure Vo in the circuit in...Ch. 2 - (a) Consider the Wheatstone bridge shown in Fig....Ch. 2 - Figure 2.131 represents a model of a solar...Ch. 2 - Find Vo in the two-way power divider circuit in...Ch. 2 - An ammeter model consists of an ideal ammeter in...Ch. 2 - The circuit in Fig. 2.134 is to control the speed...Ch. 2 - Find Rab in the four-way power divider circuit in...Ch. 2 - Repeat Prob. 2.75 for the eight-way divider shown...Ch. 2 - Suppose your circuit laboratory has the following...Ch. 2 - In the circuit in Fig. 2.137, the wiper divides...Ch. 2 - Prob. 79CPCh. 2 - A loudspeaker is connected to an amplifier as...Ch. 2 - For a specific application, the circuit shown in...Ch. 2 - The pin diagram of a resistance array is shown in...Ch. 2 - Two delicate devices are rated as shown in Fig....
Knowledge Booster
Learn more about
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
- For the circuit of the Figure shown, find the following quantities: a. The current, I. b. The voltage drop across each resistor. c. The voltage across the open terminals a and b. R- 300 0 AP+ R2 = 100 0 Ra- 250 0 إجابتكarrow_forwardYour answer is partially correct. In the figure the current in resistance 6 is ig = 1.42 A and the resistances are R1 = R2 = R3 = 2.02 Q, R4 = 17.2 Q, R5 = 8.68 Q, and R6 = 3.94 Q. What is the emf of the ideal battery? R R R, R3 R4 R6 Number i 51.6 Units Varrow_forwardTwo resistive coils R1, R2 are connected in parallel across 110 V DC supply and takes 18 A from the supply. The power dissipated in R1 is 600 W, then the value of resistive coil R1 is Windows bu انتقل إلى الإعدادت لندarrow_forward
- Given the electric circuit below, determine the total resistance. 5.0 2 ... I 30 V 0.4 Q 3.0 Q 7.0 2 A) 2.5 ohms B) 4.8 ohms 6.8 ohms D) 7.5 ohms +arrow_forwardWhat is the current provided by the voltage source in this circuit? 3 H + 5 cos 2t Varrow_forward3. For the circuit shown, both meters (voltmeter and ammeter) are idealized, the battery has no appreciable internal resistance, and the ammeter reads 1.25 A. (a) What does the voltmeter read? (b) What is the emf ɛ of the battery? 25.0 2 15.0 ww 45.0 2 15.0 2 10.0 02 35.0 N 2= ?arrow_forward
- d. is a minimum working voltage 79. Which of the following formulas can be used with Ohm's law to determine the amount of voltage necessary to pu ampere of current through ohms of resistance? a. E=IX R E = 0.8 AX 6 E = 4.8 V b. C. d. X₁ = 2 π fL E XL X₁₂=X₁₁+X₁₂+X₁₁ |=arrow_forwardYou want to connect a motor to a 36 V battery through a 20 meter extension cable. The cable consists of two conductive wires, each with a resistance of 0.05 2/m. If the motor was connected directly to the battery, the motor would draw 9 A of current. How many volts are across the motor when you connect it to the battery through the extension cable? O 24.0 V O 27.0 V O 33.0 V O 30.8 Varrow_forwardA 12-volt battery is connected to a series circuit in which the conductance is 0.5 henry and the resistance is 10 ohms. Caleulate the current I if the initial current is zero.arrow_forward
- Ⓐav Calculate the equivalent Resistance ww ww 1000 120002 www 100002 10002 12000 2arrow_forwardAn aluminum wire 7.5 m long is connected in a parallel with a copper wire 6 m long. When a current of 5 A is passed through the combination, it is found that the current in the aluminum wire is 3 A. The diameter of the aluminum wire is 1 mm. Determine the diameter of the copper wire. Resistivity of copper is 0.017 μΩ-m Aluminum is 0.028 μΩ-m.arrow_forwardWhen you connect a voltmeter to read a dc voltage a. polarity is not important b. connect the voltmeter in series with the circuit c. connect the voltmeter across the component d. connect the common meter lead to the most positive point in the circuitarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
- Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill EducationElectric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSONEngineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,