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How can the strength of an electromagnet’s field be decreased?

by decreasing the number of loops in the solenoid
by winding the coils more tightly
by increasing the current in the solenoid
by using a stronger ferromagnetic material for the core

1 answer

The strength of an electromagnet's field can be decreased by decreasing the current in the solenoid or by decreasing the number of loops in the solenoid. Winding the coils more tightly or using a stronger ferromagnetic material for the core will actually increase the strength of the electromagnet's field.
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