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4.2.2 Quiz: Electromagnetism
Question 2 of 10
Suppose the number of coils in the solenoid of an electromagnet is
increased. What happens to the electromagnet?
A. Its strength increases, then decreases.
B. Its strength becomes greater.
OC. Its strength remains the same.
OD. Its strength becomes less.

Verified Answer :

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Final answer:

Increasing the number of coils in a solenoid results in an increase in the strength of the electromagnet due to the induced emf being proportional to the square of the number of coils.


Explanation:

The relationship between the number of coils in a solenoid and the induced emf:

Increasing the number of coils in a solenoid increases the strength of the electromagnet. This is because the induced emf is proportional to the square of the number of coils in a solenoid.


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