An electric motor uses regular magnets and an electromagnet to create motion. The attracting and repelling forces create rotational motion along with the electric current from the electromagnet.

Question

What can a car manufacturer do to make an electric motor stronger?
a
A car manufacturer can add coils to the electromagnet and increase the size of the magnets causing the rotational motion.
b
A car manufacturer can add coils to the electromagnet and decrease the size of the magnets causing the rotational motion.
c
A car manufacturer can remove coils from the electromagnet and decrease the size of the magnets causing the rotational motion.
d
A car manufacturer can remove coils from the electromagnet and increase the size of the magnets causing the rotational motion.

Answer 1

The correct answer is:

a A car manufacturer can add coils to the electromagnet and increase the size of the magnets causing the rotational motion.

Adding coils to the electromagnet increases the strength of the magnetic field generated by the electromagnet, and increasing the size of the permanent magnets enhances the overall magnetic interaction, leading to a stronger motor.