You are facing a loop of wire which carries a clockwise current of 3.0 A and whi

Question

You are facing a loop of wire which carries a clockwise current of 3.0 A and which surrounds an area of 5.8 times 10^-2 m^2. The magnetic dipole moment of the loop is: A. 3.0 A m^2, into the page B. 3.0 A m^2, out of the page C. 0 17 A m^2, into the page D. 0.17 A m^2, out of the page E. 0.17 A m^2, left to right A point charge -5q lies at the center of a spherical conducting shell with net charge of +5q. a) What is the charge on the inner surface of the shell? 0 3q -5q +5q 8q b) What is the charge on the outer surface of the shell? 0 3q -5q +5q 8q

Explanation / Answer

Question 9:

magnetic moment M = IA = (3.0A)(5.8*10^-2) = 0.174 Am^2
And the direction is into the page by using the right hand thumb rule.
Hence the correct option is C .

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