Basic Engineering Circuit Analysis
11th Edition
ISBN: 9781118539293
Author: J. David Irwin, R. Mark Nelms
Publisher: WILEY
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Textbook Question
Chapter 1, Problem 29P
Element 2 in Fig. Pl.29 absorbed
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8. The resistance of an
1
aluminum wire at 29°C is 20
ohms. Determine its resistance
at 100°C. if the inferred
absolute temperature is
-236°C. *
O 26.593 ohms
O 24.359 ohms
25.359 ohms
23.539 ohms
The resistance of a copper wire at 20 deg. C is 30 ohms. If the temperature
coefficient of copper at 0 deg C is 0.00427, what is the resistance if the
temperature is increased to 30 degrees?
6. A heating element supplies 300 kJ in 50 minutes. Find the p.d. across the element when the
element when the current is 2 A.
Chapter 1 Solutions
Basic Engineering Circuit Analysis
Ch. 1 - If the current in an electric conductor is 2.4 A,...Ch. 1 - Determine the time interval required for a 12�A...Ch. 1 - A lightning bolt carrying 30,000 A lasts for 50...Ch. 1 - If a 12-V battery delivers 100 J in 5 s, find (a)...Ch. 1 - The current in a conductor is 1.5 A. How many...Ch. 1 - If 60 C of charge pass through an electric...Ch. 1 - Determine the number of coulombs of charge...Ch. 1 - Five coulombs of charge pass through the element...Ch. 1 - The current that enters an element is shown in...Ch. 1 - The charge entering the positive terminal of an...
Ch. 1 - The charge entering the positive terminal of an...Ch. 1 - Prob. 12PCh. 1 - The power absorbed by the BOX in Fig. Pl. 13 is...Ch. 1 - The power absorbed by the BOX in Fig. Pl. 14 is...Ch. 1 - The energy absorbed by the BOX in Fig. P1.15 is...Ch. 1 - The charge that enters the BOX in Fig. P1.16 is...Ch. 1 - The energy absorbed by the BOX in Fig. Pl. 17 is...Ch. 1 - The charge entering the upper terminal of the BOX...Ch. 1 - The energy absorbed by the BOX in Fig. Pl. 19 is...Ch. 1 - Determine the amount of power absorbed or supplied...Ch. 1 - Calculate the power absorbed by element A in Fig....Ch. 1 - Calculate the power supplied by element A in Fig....Ch. 1 - Element A in the diagram in Fig. PI .23 absorbs 30...Ch. 1 - Element B in the diagram in Fig. P1.24 supplies 60...Ch. 1 - Element B in the diagram in Fig. PI .25 supplies...Ch. 1 - Element B in the diagram in Fig. Pl.26 supplies 72...Ch. 1 - (a) In Fig. Pl.27 (a), P1=36W. Is element 2...Ch. 1 - Two elements are connected in series, as shown in...Ch. 1 - Element 2 in Fig. Pl.29 absorbed 32W. Find the...Ch. 1 - Choose Is such that the power absorbed by element...Ch. 1 - Find the power that is absorbed or supplied by the...Ch. 1 - Find the power that is absorbed or supplied by the...Ch. 1 - Compute the power that is absorbed or supplied by...Ch. 1 - Find the power that is absorbed or supplied by...Ch. 1 - Find Ix in the network in Fig. P1.35.Ch. 1 - Prob. 36PCh. 1 - Find the power absorbed or supplied by element 1...Ch. 1 - Find the power absorbed or supplied by element 3...Ch. 1 - Find the power absorbed or supplied by element 1...Ch. 1 - Find Vx in the network in Fig. P1.40 using...Ch. 1 - Find Ix in the circuit in Fig. P1.41 using...Ch. 1 - Is the source Vs in the network in Fig. P1.42...Ch. 1 - Find I0 in the network in Fig. P1.43 using...Ch. 1 - Calculate the power absorbed by each element in...Ch. 1 - Calculate the power absorbed by each element in...Ch. 1 - In the circuit in Fig. P1.46, element 1 absorbs 40...
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- Find the Vout Value of the circuit below during the positive half cycle. V2 Silicon V1 ĄC 10 V3 2 Voutarrow_forward6. Determine the power dissipated by the element of an electric fire of resistance 20 ohms when a current of 10A flows through. If the fire is on for 6 hours, determine the energy used and the cost if 1 unit of electricity costs P 0.65. 7. A business uses two 3kW fires for an average of 20 hours each per week and six 150W lights for 30 hours each per week. If the cost of electricity is P 0.64 per unit, determine the weekly cost of electricity to the business.arrow_forwardDetermine the equivalent resistance between c and d for the combination shown. 30n 1252arrow_forward
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- Figure 1 shows a graph of Current (mA) vs Voltage (V) for three different materials namely A, B and C. Based on the graph, answer the following questions: (i) Sketch a graph for Power (W) vs Current (mA) for Material B. On the sketched graph, show the values of power when the values of current are 50 mA and 100 mA. Assume Materials A and C have cylindrical shape with the same length. If cross sectional area of Material A is double as compared to Material C, determine the ratio of resistivity of Material A (ii) to Material C. (iii) Find the equivalent conductance, G, when the three materials are connected in series and also when they are connected in parallel. Give your answer in two decimal points. B 100 80 60 40 20 1 3 4 Voltage (V) Figure 1 Current (mA)arrow_forwardChoose the letter of the correct answer 1. Three pith balls supported by insulating threads hang from a support. We know that ball X is positively charged. When ball X is brought near balls Y and Z without touching them, it attracts Y and repels Z. We can conclude that: a. Y has a neutral charge. b. Y has a positive charge. c. Z has a negative charge. d. Z has a positive charge. 2. When you brush your hair on a cool, dry day, you might hear your hair crackling as it gets charged. Which of the following most likely explains what is happening? a. Lightning is about to strike. b. Electrons transfers from the air to the hair. c. Electrons are added from the air to the brush. d. Electrons transfer from the hair to the brush. 3. Several electrons are added to a conducting sphere. Which of the following statements is true? a. The electric field inside the sphere is zero. b. The electric field inside the sphere is uniform. c. The electric field inside the sphere is directed inward. d. The…arrow_forwardThe Current flowing through a heating element is 6 A when a PD of 36 V is applied across it. Find the Resistance of the element a. 6 OHMS O b. 1296 OHMS c. 0.166 OHMS O d. 216 OHMSarrow_forward
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