We see the edge of a 44 turn flat circular coil of area 0.00555m 2 in magnitude.

Question

We see the edge of a 44 turn flat circular coil of area 0.00555m2 in magnitude. The eye (not ours) looks along thecoil’s axis, “seeing” a clockwise current of 9.87A. Find the coil’s magnetic dipole moment (with our“DIRECTION” answer relative to the paper, not relativeto the eye, so our answer is has a magnitude and a direction eitherright () or left ()).


Diagram:    (eye looking this way----->)      |   <-------thats the edge of the coil. Have to find the direction answerrelative to that vertical line, either right or left of it.

Explanation / Answer

Formula for calculating the value of the magnetic dipolemoment is                         = nIA                           = (44 turn)(9.87A)(0.00555 m2 )                            =2.41 A.m

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