Question

How can the magnetic field strength of an electromagnet be reduced?

Answer 1

HELLO THERE!

The strength of magnetic field produced by an electromagnet can be reduced by the following methods:

=> By decreasing the electro motive force (emf) of the cell, hence decreasing the amount of current flowing through the coil.

=> By decreasing the number of turns, hence decreasing the surface area of the coil.

=> By removing the soft iron bar, if any, inserted within the coil.

These are the methods.

HOPE MY ANSWER IS SATISFACTORY... :)