A square conducting loop is situated such that it is vertical, in the x-z plane.

Question

A square conducting loop is situated such that it is vertical, in the x-z plane. The earth’s gravitational field points downward (in the –z direction). The loop is dropped, and maintains its orientation in the x-z plane. A magnetic field pointing in the +y direction exists and is uniform with respect to time, but varies as a function of z: B(z)=Bo(10m-z)Å·. The loop is dropped and allowed to fall under the influence of gravitation. You observe the loop from the +y direction.
Which of the following occurs?

- There is a clockwise induced current.

- There is a counter-clockwise induced current.

- There is no induced current.

- The situation is unclear because we do not know the initial conditions.

Explanation / Answer

There is a clockwise induced current

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