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A long straight wire lies on a horizontal table and carries a decreasing current toward the...

A long straight wire lies on a horizontal table and carries a decreasing current toward the south. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the direction of the induced current in these coils is... I already have the answer. Just need an explanation. Thank you!

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Answer #1

According to "right hand thumb rule" th direction of magnetic field will be into the plane of paper for coil 1 and out of the plane of paper for coil 2.

For coild 1 :- If current in the wire decreases then inward magnetic field in the coil 1 also decreases. so magnetic flux associated with the coil decreases. According to lenz law, the induced current in the coil 1 will be such that it tries to oppose the change in magnetic flux. Since inward magnetic flux decrease so induced current will also produce magnetic field into the plane of paper (on viewed from above) so that it could oppose the change.

Note-I took direction of south towards left. you can take it with your choice.

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