In situation A, a bar magnet moves toward a stationary coil at a constant speed, and the maximum current is recorded. If the magnet moves again toward the coil in situation B at the same speed, from the same direction, what would explain the different current reading?

moving the coil to the right or left

changing the magnet strength

moving the coil toward the magnet at the same speed as the magnet

reversing the magnet polarity

Question

Darian Olson

Physics

23 January, 09:29

In situation A, a bar magnet moves toward a stationary coil at a constant speed, and the maximum current is recorded. If the magnet moves again toward the coil in situation B at the same speed, from the same direction, what would explain the different current reading?

moving the coil to the right or left

changing the magnet strength

moving the coil toward the magnet at the same speed as the magnet

reversing the magnet polarity

+2

Answers (1)

Know the Answer?

Alejandra Robinson · Answer 1

The reversing of the magnet polarity will explain the different current reading.

Answer: Option D

Explanation:

According to Faraday's law of inductance, whenever a bar magnet is moved toward a stationary coil at constant speed, current will be generated in that coil. So in this case, the first maximum current in the above situation say A is recorded successfully.

Similarly, when the arrangement is kept as it is, in situation B, the current is observed to have different reading. This may be because of the polarity of the magnet would have changed leading to different current reading.