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A small circular loop of area 2.00 cm^(2) is placed in the plane of, and concentric with, a large circular loop of radius 1.00 m. The current in the large loop is changed at a constant rate from 50.0 A to -50.0 A (a change in direction) in a time of 1.00 s, starting at t= 0. What is the magnitude of the magnetic field B at the center of the small loop due to the current in the large loop at (a) t = 0, (b) t = 0.500 s, and ( c) t = 1.00 s? ( d) From t= 0 to t= 1.00 s, is vecB reversed? Because the inner loop is small, assume vecB is uniform over its area. (e) What emf is induced in the small loop at t = 0.500 s? |
| Answer» SOLUTION :(a) 31.4 μT, (B) 0, (c) 31.4 μT, {d) YES, (E) 12.6 nV | |