Students built two electromagnets. The electromagnets are the same except that one has 20 wire coils around its core, and the other has 40 wire coils around its core. Which is the best comparison?(1 point)

Question

Responses

The electromagnet with 20 coils will be stronger than the electromagnet with 40 coils.
The electromagnet with 20 coils will be stronger than the electromagnet with 40 coils.

The electromagnet with 40 coils will be stronger than the electromagnet with 20 coils.
The electromagnet with 40 coils will be stronger than the electromagnet with 20 coils.

The electromagnet with 40 coils will be exactly twice as strong as the electromagnet with 20 coils.
The electromagnet with 40 coils will be exactly twice as strong as the electromagnet with 20 coils.

The electromagnets will be equally strong.

Answer 1

The best comparison is:

The electromagnet with 40 coils will be stronger than the electromagnet with 20 coils.

This is because the strength of an electromagnet is generally proportional to the number of coils of wire wrapped around its core; more coils create a stronger magnetic field. However, it is important to note that the strength may not be exactly double, but it will be stronger with more coils.