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A long solenoid with N₁ windings and radius b surrounds a coaxial, narrower solenoid with N2 windings and radius a

A long solenoid with N₁ windings and radius b surrounds a coaxial, narrower solenoid with N2 windings and radius a

Physics for Scientists and Engineers: Foundations and Connections
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter31: Gauss’s Law For Magnetism And Ampère’s Law
Section: Chapter Questions
Problem 67PQ
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A long solenoid with N₁ windings and radius b surrounds a coaxial, narrower solenoid with N2 windings and radius a <bas shown in (Figure 1). The length of solenoids is A. At the far end, the outer solenoid is attached to the inner solenoid by a wire, so that current flows down the outer coil and then back through the inner coil as shown. What would be the inductance if the sense of the inner coil were reversed? Express your answer in terms of some or all the variables N1, N2, a, b, λ, I, and magnetic constant μ. ΜΕ ΑΣΦ ? Figure 2 Мо [N₁ +N₂ L = λ Submit Previous Answers Request Answer × Incorrect; Try Again; 4 attempts remaining The correct answer involves the variable a, which was not part of your answer. Part E In the original configuration, what would be the inductance if λ = 20.0 cm, a = 1.00 cm, b = 2.00 cm, N₁ = 1700 and N₂ = 750. Express your answer with the appropriate units. |µA а ха Хь x.10" ☑ b L= 1.02 10 H Submit Previous Answers Request Answer 1 of 1 × Incorrect; Try Again; 5 attempts remaining Part F Leads N₁ Solenoids connected at this end Using the values from part E, what would be the inductance in the configuration of part D? Express your answer with the appropriate units. μA ? L= 6.89 H
Transcribed Image Text:A long solenoid with N₁ windings and radius b surrounds a coaxial, narrower solenoid with N2 windings and radius a <bas shown in (Figure 1). The length of solenoids is A. At the far end, the outer solenoid is attached to the inner solenoid by a wire, so that current flows down the outer coil and then back through the inner coil as shown. What would be the inductance if the sense of the inner coil were reversed? Express your answer in terms of some or all the variables N1, N2, a, b, λ, I, and magnetic constant μ. ΜΕ ΑΣΦ ? Figure 2 Мо [N₁ +N₂ L = λ Submit Previous Answers Request Answer × Incorrect; Try Again; 4 attempts remaining The correct answer involves the variable a, which was not part of your answer. Part E In the original configuration, what would be the inductance if λ = 20.0 cm, a = 1.00 cm, b = 2.00 cm, N₁ = 1700 and N₂ = 750. Express your answer with the appropriate units. |µA а ха Хь x.10" ☑ b L= 1.02 10 H Submit Previous Answers Request Answer 1 of 1 × Incorrect; Try Again; 5 attempts remaining Part F Leads N₁ Solenoids connected at this end Using the values from part E, what would be the inductance in the configuration of part D? Express your answer with the appropriate units. μA ? L= 6.89 H
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