Question

two loops of wire are arranged so that a changing current in one will induce a current in the other. if the current in the first is increasing clockwise by one amp every second, the current in the second loop will? a. be increasing counterclockwise. b. stay constant. c. increase clockwise also. d. stay zero

Answer 1

An induced current in a changing magnetic field will be in such a direction as to oppose the magnetic field causing the induced current.

Thus, the current in the second loop must be increasing in a counterclockwise direction (a)

The induced current must produce magnetic field that opposes the field producing the change or perpetual motion could occur.