A circular coil of current I=1A and area A=0.2m2 is placed flat on a table where the magnetic field B=1T along the horizontal and to the right, seen from above and looking down on the table, the current is flowing in a counter clockwise direction. Find the following:

Physics for Scientists and Engineers
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Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter28: Magnetic Fields
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Problem 3P: Find the direction of the magnetic field acting on a positively charged particle moving in the...
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1. A circular coil of current I=1A and area A=0.2m2 is placed flat on a table where the magnetic field B=1T along the horizontal and to the right, seen from above and looking down on the table, the current is flowing in a counter clockwise direction. Find the following:

a.) Calculate the torque on the coil for N=1

b.) What is the torque on the coil when the coil has turned by 30 degrees

c.) What is the torque on the coil when the coil is perpendicular to the field lines?

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