Your physics professor is doing a demo to demonstrate Faraday’s law. He uses a 5m long wire of 10 Ohms total resistance, and he shapes it as a perfect square. Your professor places the loop in a plane perpendicular to a 2 Tesla uniform magnetic field pointing from above into the plane of the loop. Then your professor re-shaped the wire in five seconds from a square into a perfect circle. The new loop remains in the same plane. a. What is the magnitude of the average induced emf in the wire during this time? b. Find the direction, and average magnitude of the current in the loop during the deformation? Explain your reasoning.
Your physics professor is doing a demo to demonstrate Faraday’s law. He uses a 5m long wire of 10 Ohms total resistance, and he shapes it as a perfect square. Your professor places the loop in a plane perpendicular to a 2 Tesla uniform magnetic field pointing from above into the plane of the loop. Then your professor re-shaped the wire in five seconds from a square into a perfect circle. The new loop remains in the same plane. a. What is the magnitude of the average induced emf in the wire during this time? b. Find the direction, and average magnitude of the current in the loop during the deformation? Explain your reasoning.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter32: Faraday’s Law Of Induction
Section: Chapter Questions
Problem 12PQ
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Question
Your physics professor is doing a demo to demonstrate Faraday’s law. He uses
a 5m long wire of 10 Ohms total resistance, and he shapes it as a perfect square.
Your professor places the loop in a plane perpendicular to a 2 Tesla uniform
magnetic field pointing from above into the plane of the loop. Then your
professor re-shaped the wire in five seconds from a square into a perfect circle.
The new loop remains in the same plane.
a. What is the magnitude of the average induced emf in the wire during this
time?
b. Find the direction, and average magnitude of the current in the loop
during the deformation? Explain your reasoning.
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