Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Chapter 3, Problem 27P
To determine
The resistance of copper wire at
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Determine the thermal coefficient of resistance of copper at 50°C, then use this value todetermine the resistance of copper wire at 170°F if the resistance of this copper wire at 50°C is50 Ω. The thermal coefficient of resistance of copper at 0°C is 0.004264/C° .
A copper conductor has a resistance of 15 ohms at 20 degrees celcius. Determine the resistance at 80 degrees celcius if the temperature coefficient of copper at 20degrees celcius is 0.0038
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Chapter 3 Solutions
Introductory Circuit Analysis (13th Edition)
Ch. 3 - Convert the following to mils: 0.2Â in. 1/32Â in....Ch. 3 - Calculate the area in circular mils (CM) of wires...Ch. 3 - Prob. 3PCh. 3 - What is the resistance of a copper wire 200 ft...Ch. 3 - What is the area in circular mils of an aluminum...Ch. 3 - A 2.2 resistor is to be made of nichrome wire. If...Ch. 3 - What is the diameter in inches of a copper wire...Ch. 3 - A wire 1000 ft long has a resistance of 0.5 and an...Ch. 3 - A contractor is concerned about the length of...Ch. 3 - What is the cross-sectional area in circular mile...
Ch. 3 - Prob. 11PCh. 3 - Determine the increase in resistance of a copper...Ch. 3 - What is the new resistance level of a copper wire...Ch. 3 - In construction the two most common wires employed...Ch. 3 - Compare the area of a #12 wire with the area of a...Ch. 3 - Compare the area of a #20 hookup wire to a #10...Ch. 3 - For the system in Fig. 3.46, the resistance of...Ch. 3 - From Table 3.2, determine the maximum permissible...Ch. 3 - The resistance of a copper wire is 2 at room...Ch. 3 - The resistance of an aluminum bus-bar is 0.02 at...Ch. 3 - The resistance of a copper wire is 1.2 at room...Ch. 3 - The resistance of a copper wire is 25m at a...Ch. 3 - The resistance of a copper wire is 1 at 20C (room...Ch. 3 - If the resistance of 1000 ft of wire is about 1 at...Ch. 3 - Verify the value of 20 for copper in Table 3.4 by...Ch. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - A 22 wire-wound resistor is rated at +200PPM for a...Ch. 3 - A 100 wire-wound resistor is rated at +100PPM for...Ch. 3 - What is the approximate increase in size from a 1...Ch. 3 - If the resistance between the outside terminals of...Ch. 3 - If the wiper arm of a linear potentiometer is...Ch. 3 - Show the connections required to establish 4k...Ch. 3 - Find the range in which a resistor having the...Ch. 3 - Find the color code for the following 10%...Ch. 3 - Is there an overlap in coverage between 20...Ch. 3 - Given a resistor coded yellow, violet, brown,...Ch. 3 - How would Fig. 3.26(a) change if the resistors of...Ch. 3 - Find the value of the following surface mount...Ch. 3 - Find the conductance of each of the following...Ch. 3 - Find the conductance of 1000 ft of #12 AWG wire...Ch. 3 - Find the conductance of a 10,20 and 100 resistor...Ch. 3 - The conductance of a wire is 100 S. If the area of...Ch. 3 - Why do you never apply an ohmmeter to a live...Ch. 3 - How would you check the status of a fuse with an...Ch. 3 - How would you determine the on and off states of a...Ch. 3 - How would you use an ohmmeter to check the status...Ch. 3 - Using metric units, determine the length of a...Ch. 3 - Repeat Problem 11 using metric units; that is,...Ch. 3 - If the sheet resistance of a tin oxide sample is...Ch. 3 - Determine the width of a carbon resistor having a...Ch. 3 - Derive the conversion factor between (CM-/ft) and...Ch. 3 - In your own words, review what you have learned...Ch. 3 - Visit your local library and find a table listing...Ch. 3 - Find at least one article on the application of...Ch. 3 - Using the required 1MA/cm2 density level for...Ch. 3 - Research the SQUID magnetic field detector and...Ch. 3 - Find the resistance of the thermistor having the...Ch. 3 - Using the characteristics of Fig. 3.38, determine...Ch. 3 - Referring to Fig. 3.40(a), find the terminal...
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Similar questions
- In an experiment using a copper made conductor, the resistance of the conductor which has a diamIeter of 0.1045 inches is 75 Q Assume conductivity of a copper as 5.8 X 10 S/m. Find the length of the copper conductor in meters. [I inch- 0.0254 m]arrow_forwardA wire has a circular cross-section of radius r= 3.53 mm. The conductivity of the wire is 1x10^5 (Ohm, meter) and its lengthis 2m. The total resistance of the wire in Ohms is:O a. 0.51O b. 0.72ç. 0.26O d. 5136.07O e. 797497.60arrow_forward4. What is the resistance of a copper wire 200 ft long and 0.016" in diameter (T = 20°C)? 5. a. What is the area in circular mils of an aluminum con- ductor that is 80 ft long with a resistance of 2.5 N? b. What is its diameter in inches?arrow_forward
- Question 3 a. Some materials exhibit the property of superconductivity under certain conditions. State what is meant by superconductivity and explain the required conditions for the material to become superconducting. b. The diagram below shows the cross-section of a cable consisting of parallel filaments that can be made superconducting, embedded in a cylinder of copper. copper cylinder filament The cross-sectional area of the copper in the cable is 2.28 x 10-7 m². The resistance of the copper in a 1.0 m length of the cable is 0.075 N. Calculate the resistivity of the copper, stating an appropriate unit. State and explain the what happen to the resistance of the cable when the embedded filaments of wire are made superconductive? i.arrow_forward1.A piece of copper wire has a resistance of 5 : at 20°C. What is its resistance at 100°C? 2.If the resistance of a length of copper wire is 7 at 20°C, calculate the resistance at 60°C.arrow_forward4. A copper wire has a length of 3500 ft and having an area of 144 cm squared. Find the resistance of the copper conductor at a temperature of 43ºC. 5. The power taken by a resistive coil made of copper wire is 1200W at 120V and 15 °C. Calculate the power consumed by the coil when connected at 250V and 110°C. The temperature coefficient at 27 °C is 0.00393 °C-1.arrow_forward
- The temperature coefficient of resistance at 30°C of a conductor is 0.003759. If it has a resistance of 1.25 Ohm at 25° C, determine its resistance at 40° C.arrow_forwardThe temperature coefficient of resistance of a wire is 0.00125 °C-1. At 30 °C, its resistance is 10. At what temperature will the resistance of the wire be 2 ohms? A current of 4.8 A is flowing in a conductor. Determine the number of electrons flowing per minute through the X-section of the conductor.arrow_forward2. What is the resistance at normal room temperature of 80 m of copper wire having a diameter of 0.64 mm? (Bcopper 1.7241 x 10-8 0- m at 20 °C). 3. A lightning bolt strikes an airplane with 3OKA for 2ms. How many Coulombs of charge are deposited on the plane?arrow_forward
- Problem:- Resistance of a wire at 0° Celsius is measured to be 152. If the temperature increased to 35° Celsius, determine the change of resistance for the wire. Assuming the use of copper wire (ao = 0.004041)arrow_forwardIt is found that the resistance of a coil of wire increases from 40 ohm at 15°C to 50 ohm at 60°C.Calculate the resistance temperature coefficient at 0°C of the conductor material.arrow_forwardA coil of copper wire has a resistance of 62 ohms at room temperature of 24°C, (a) what will be its resistance at 80°C? (b) what will be its resistance at -20°C?arrow_forward
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