Question

A loop of wire is pulled with constant velocity v to the right through a region of space where there is a uniform magnetic field B directed into the page, as shown. The induced current is as follows

A) Directed CW both entering and leaving REGION II.

B) Directed CCW both entering and leaving REGION II.

C) Directed CW entering REGION II and CCW leaving REGION II

D) Directed CCW entering REGION II and CW leaving REGION II.

E) zero at all times

Answer 1

The correct option is: (D) Directed CCW entering REGION II and CW leaving REGION II.

Explanation:

As you enter region II, flux into the page is gained. To counteract that, current flows to create a field out of the page to maintain flux. Based on RHR–solenoid, that current is CCW. When leaving the region, the flux into the page is decreasing so current flows to add to that field which gives CW.