iPad 5:40 PM e edugen.wileyplus. com Assignment Gradebook tice ment FULL scREEN

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iPad 5:40 PM e edugen.wileyplus. com Assignment Gradebook tice ment FULL scREEN PRINTERVERSION BACK Chapter 21, Problem 56 GO A long solenoid has 1400 turns per meter of length, and it carries a current of 2.5 A. A small circular coil of wire is placed inside the solenoid with the normal to the coil oriented at an angle of 90.0 with respect to the axis of the solenoid. The coil consists of 54 turns, has an area of 1.2 x 10 3 m2, and carries a current of 0.45 A. Find the torque exerted on the coil Click if you would like to show work for this question Open Show Work By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your Question Attempts: 0 of 4 used SAVE FOR LATER Earn Maximum Points available only if you answer this question correctly in four attempts or less, MapleNet Copyright 2000-2017 by John Wiley & Sons, Inc. or related companies. All rights reserved

Explanation / Answer

Magnetic field of a solenoid: B

B = = 4.3x10-3T

moment of the coil: m

m = IA = 0.45*1.2x10-3(54) = 29.16x10-3A m²

Torque on the coil: T

T = mxB = mB = 29.16*4.3 x10^-6 = 12.7x10^-5 N m

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