Electric motors create motion by using magnets and electromagnets.

What can a person do to make an electric motor stronger?
Add coils to the electromagnet and use larger magnets.
Add coils to the electromagnet and smaller magnets
Remove coils from the electromagnet and use larger magnet
Remove coils from the electromagnet and use smaller magnets

To make an electric motor stronger, a person can add coils to the electromagnet and use larger magnets. This would increase the strength of the magnetic field generated by the electromagnet, leading to more force and torque produced by the motor.