Problem2 Two long solenoids are arranged coaxially (one inside the other, centered on the same axis). Both have length L 1.0m. The inner solenoid has r1 1.6 cm, n1 220 turns per centimeter, and resistance Ri = 10Ω. The outer solenoid has radius r2 = 1.8 cm, n2 = 120 turns per centimeter, and resistance R2 5.3 Ω. Since the length of the solenoids is much longer than their diameter, we can ignore the fringing of the magnetic field at the ends and treat the solenoids as infinitely long when calculating the magnetic fields (i.e., we can assume that the magnetic field inside is uniform along the entire length). (a) If the inner solenoid initially carries a current I 1.5 A that then drops to zero at a steady rate over a time interval Δt-: 25 ms, and if the outer inner solenoid is not connected to any battery, what is the current induced in the outer solenoid during this time interval? (b) If instead it is the outer solenoid that initially has a current I 1.5A that then drops to zero at a steady rate over a time interval Δt =-25 ms" and the inner solenoid is not connected to any battery, what is the current induced in the inner solenoid during this time interval? Compare your answers to (a) and (b), both numerically and in terms of the mathematical expressions.
Problem2 Two long solenoids are arranged coaxially (one inside the other, centered on the same axis). Both have length L 1.0m. The inner solenoid has r1 1.6 cm, n1 220 turns per centimeter, and resistance Ri = 10Ω. The outer solenoid has radius r2 = 1.8 cm, n2 = 120 turns per centimeter, and resistance R2 5.3 Ω. Since the length of the solenoids is much longer than their diameter, we can ignore the fringing of the magnetic field at the ends and treat the solenoids as infinitely long when calculating the magnetic fields (i.e., we can assume that the magnetic field inside is uniform along the entire length). (a) If the inner solenoid initially carries a current I 1.5 A that then drops to zero at a steady rate over a time interval Δt-: 25 ms, and if the outer inner solenoid is not connected to any battery, what is the current induced in the outer solenoid during this time interval? (b) If instead it is the outer solenoid that initially has a current I 1.5A that then drops to zero at a steady rate over a time interval Δt =-25 ms" and the inner solenoid is not connected to any battery, what is the current induced in the inner solenoid during this time interval? Compare your answers to (a) and (b), both numerically and in terms of the mathematical expressions.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:Problem2
Two long solenoids are arranged coaxially (one inside the other, centered on the same axis). Both
have length L 1.0m. The inner solenoid has r1 1.6 cm, n1 220 turns per centimeter, and
resistance Ri = 10Ω. The outer solenoid has radius r2 = 1.8 cm, n2 = 120 turns per centimeter,
and resistance R2 5.3 Ω. Since the length of the solenoids is much longer than their diameter, we
can ignore the fringing of the magnetic field at the ends and treat the solenoids as infinitely long
when calculating the magnetic fields (i.e., we can assume that the magnetic field inside is uniform
along the entire length).
(a) If the inner solenoid initially carries a current I 1.5 A that then drops to zero at a steady rate
over a time interval Δt-: 25 ms, and if the outer inner solenoid is not connected to any battery,
what is the current induced in the outer solenoid during this time interval?
(b) If instead it is the outer solenoid that initially has a current I 1.5A that then drops to zero
at a steady rate over a time interval Δt =-25 ms" and the inner solenoid is not connected to any
battery, what is the current induced in the inner solenoid during this time interval? Compare
your answers to (a) and (b), both numerically and in terms of the mathematical expressions.
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