The magnetic field in the cylindrical region shown in figure increases at a constant rate of 20.0 mT/s. Each side of the square loop abcd and defa has a length of 1.00 cm and a resistance of 4.00 Ω. Find the current (magnitude and sense) in the wire ad if (a) the switch S
1 is closed but S
2 is open, (b) S
1 is open but S
2 is closed, (c) both S
1 and S
2 are open and (d) both S
1 and S
2 are closed.
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