Physics for Scientists and Engineers
10th Edition
ISBN: 9781337553278
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 26, Problem 17P
To determine
The fractional change of resistance of iron filament.
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What is the fractional change in the resistance of an iron filament when its temperature changes from 25.0°C to 50.0°C?
The resistance of a copper wire is measured to be 3.80 Ω at 21.6°C. What is the resistance of this wire at 45.0°C? The temperature coefficient for copper is ? = 3.9 ✕ 10−3 °C−1.
How much would you have to raise the temperature of a copper wire (originally at20C) to increase its resistance by 15% ?
Chapter 26 Solutions
Physics for Scientists and Engineers
Ch. 26.1 - Consider positive and negative charges of equal...Ch. 26.2 - Prob. 26.2QQCh. 26.2 - Prob. 26.3QQCh. 26.4 - When does an incandescent lightbulb carry more...Ch. 26 - Prob. 1PCh. 26 - A small sphere that carries a charge q is whirled...Ch. 26 - In the Bohr model of the hydrogen atom (which will...Ch. 26 - Prob. 4PCh. 26 - Prob. 5PCh. 26 - Figure P26.6 represents a section of a conductor...
Ch. 26 - The quantity of charge q (in coulombs) that has...Ch. 26 - A Van de Graaff generator (see Problem 24)...Ch. 26 - An electric current in a conductor varies with...Ch. 26 - Prob. 10PCh. 26 - An electric heater carries a current of 13.5 A...Ch. 26 - You are working at a company that manufactures...Ch. 26 - Prob. 13PCh. 26 - Prob. 14PCh. 26 - Prob. 15PCh. 26 - Prob. 16PCh. 26 - Prob. 17PCh. 26 - Prob. 18PCh. 26 - An aluminum wire with a diameter of 0.100 mm has a...Ch. 26 - Plethysmographs are devices used for measuring...Ch. 26 - At what temperature will aluminum have a...Ch. 26 - You are working in a laboratory that studies the...Ch. 26 - Assume that global lightning on the Earth...Ch. 26 - The Van de Graaff generator, diagrammed in Figure...Ch. 26 - A 100-W lightbulb connected to a 120-V source...Ch. 26 - The potential difference across a resting neuron...Ch. 26 - The cost of energy delivered to residences by...Ch. 26 - Residential building codes typically require the...Ch. 26 - Assuming the cost of energy from the electric...Ch. 26 - An 11.0-W energy-efficient fluorescent lightbulb...Ch. 26 - A 500-W heating coil designed to operate from 110...Ch. 26 - Why is the following situation impossible? A...Ch. 26 - Make an order-of-magnitude estimate of the cost of...Ch. 26 - Lightbulb A is marked 25 W 120 V, and lightbulb B...Ch. 26 - One wire in a high-voltage transmission line...Ch. 26 - You are working with an oceanographer who is...Ch. 26 - A charge Q is placed on a capacitor of capacitance...Ch. 26 - An experiment is conducted to measure the...Ch. 26 - Prob. 39APCh. 26 - Prob. 40APCh. 26 - Review. An office worker uses an immersion heater...Ch. 26 - The strain in a wire can be monitored and computed...Ch. 26 - A close analogy exists between the flow of energy...Ch. 26 - The dielectric material between the plates of a...Ch. 26 - Review. A parallel-plate capacitor consists of...Ch. 26 - Prob. 46APCh. 26 - Why is the following situation impossible? An...Ch. 26 - Prob. 48CPCh. 26 - A spherical shell with inner radius ra and outer...Ch. 26 - Material with uniform resistivity is formed into...
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- A gold resistance thermometer has a resistance Ro = 70.0Ω at To = 20°C. The temperature coefficient of resistance is 3.4x10-3°C. The thermometer is immersed in a container with melting tin, at which point R increases to 112.5Ω. What is the melting point of tin?arrow_forwardWhat is the resistance of a 14 cm-long piece of iron with a 1.0mm × 1.0mm square cross-section?arrow_forwardThe resistance of a copper wire at 7⁰C is 50 mΩ. If the temperature coefficient of copper at 0⁰C is 0.00427, what is the resistance in mΩ at 75⁰C? It is a Basics electrical subject.arrow_forward
- The resistance of a wire increases by 22 percent when the temperature of the wire is increased from 10 degrees C to 105 degrees C. What is the temperature coefficent (a) of the wire's material?arrow_forwardIf a current of 5A flows through a conductor with a resistance of 7 ohms for 3 minutes, how many electrons pass through any section of the conductor during this time? (Find the factor x10^21)arrow_forwardIf a conductor with a current of 500mA passing through it converts 40J of electrical energy into heat in 30sec, what is the potential drop (in volts) across the conductor?arrow_forward
- Considering a current of 0.2 A, what is the electrical potential if the resistance of the wire is 10 Ω?arrow_forwardIf 3.50 ✕ 10−3 kg of gold is deposited on the negative electrode of an electrolytic cell in a period of 2.59 h, what is the current in the cell during that period? Assume the gold ions carry one elementary unit of positive charge. mAarrow_forwardTwo cylindrical bars that have the same length of 1.30 m, are welded together in parallel. One bar is made of copper and has a diameter of 1.20 cm. The other bar is made of iron and has a diameter of 2.10 cm. What is the resistance of the welded bars?arrow_forward
- If 4.00 ✕ 10−3 kg of gold is deposited on the negative electrode of an electrolytic cell in a period of 2.74 h, what is the current in the cell during that period? Assume the gold ions carry one elementary unit of positive charge. In units of mA.arrow_forwardWhat is the resistance of a 1.6m -long copper wire that is 0.50mm in diameter?arrow_forwardA metallic conductor has a resistivity of 18 ´ 10-6 W×m. What is the resistance of a piece that is 30 m long and has a uniform cross sectional area of 3.0 mm2?arrow_forward
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