A pair of parallel conducting rails that are L = 22 cm apart lies at right angles to a uniform magnetic field of 0.4 T directed into the page, as shown in the figure below. Á R = 14 2 resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. B , into page 2 m/s L 1) What is the current in the resistor? (Express your answer to two significant figures.) mA (Submit You currently have O submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 2) What direction is the current in the bar (up or down)? Oup O down Submit You currently have 1 submissions for this question. Only 10 submission are allowed. You can make 9 more submissions for this question. Your submissions: A :/ Submitted: Sunday, July 25 at 1:24 PM Feedback: The induced current i produces an induced magnetic field Bloop that opposes the change in flux. Therefore, the current in the bar points up. 3) What is the magnetic force on the bar due to the induced current? (Express your answer to two significant figures.) mN Submit You currently have O submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 4) What direction is the magnetic force on the bar due to the induced current? Oto the left Oto the right Oupwards Odownwards Ointo the page
A pair of parallel conducting rails that are L = 22 cm apart lies at right angles to a uniform magnetic field of 0.4 T directed into the page, as shown in the figure below. Á R = 14 2 resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. B , into page 2 m/s L 1) What is the current in the resistor? (Express your answer to two significant figures.) mA (Submit You currently have O submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 2) What direction is the current in the bar (up or down)? Oup O down Submit You currently have 1 submissions for this question. Only 10 submission are allowed. You can make 9 more submissions for this question. Your submissions: A :/ Submitted: Sunday, July 25 at 1:24 PM Feedback: The induced current i produces an induced magnetic field Bloop that opposes the change in flux. Therefore, the current in the bar points up. 3) What is the magnetic force on the bar due to the induced current? (Express your answer to two significant figures.) mN Submit You currently have O submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 4) What direction is the magnetic force on the bar due to the induced current? Oto the left Oto the right Oupwards Odownwards Ointo the page
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter24: Magnetic Fields
Section: Chapter Questions
Problem 102A
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Question
A pair of parallel
1)What is the current in the resistor? (Express your answer to two significant figures.)
2)What is the magnetic force on the bar due to the induced current? (Express your answer to two significant figures.)
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