Answer :
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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