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AP® Physics 1 & 2

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Moderate

Am I Currently Direct?

APPH12-HGEP1Q

A circular conducting wire hoop is held horizontally. A bar magnet is held above it as shown.

Created for Albert.io. Copyright 2016. All right reserved.

Which of the following diagrams best represents a scenario where any induced current ($I$) will never change direction?

A

By moving the magnet down, with the South pole facing the hoop.

B

By moving the magnet up, with the South Pole facing the hoop.

C

By holding the bar magnet stationary and lifting the hoop straight up (the hoop remains horizontal).

D

By holding the bar magnet stationary, and rotating the hoop (on a horizontal axis) below it.