Question

Mr. Chorma's science class built an electromagnet with a metal rod, a wire, and a battery. They day they built it, the electromagnet worked. The next day it did not work.What is the best explanation as to why the electromagnet did not work?
A
The battery was drained.

B
The battery wouldn't conduct electricity.

C
The circuit was closed.

D
The wire wouldn't conduct electricity.

Answer 1

The answer to this: B

Answer 2

They day they built it, the electromagnet worked. The next day it did not work is The battery wouldn't conduct electricity.

What happens when the wire of the electromagnet is attached to a battery?

If you leave the wire connected long enough, the nail's magnetic domains will realign enough to make it a permanent magnet. But be careful! The current flowing through the wire makes the wire hot and drains the battery quickly.

Thus, option " B " is correct.

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