If there is no electric current in a coil of wire with a permanent magnet at its center, which statement must be true?
A. The wire is not moving relative to the magnet.
B. The coil of wire is shorter than the magnet.
C. The coil of wire is longer than the magnet.
D. The wire is moving relative to the magnet.

the wire is not moving relative to the magnet

Explanation:

took the test :D

i'm just gonna leave this comment here, so i can get a challange done-

explanation:

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."