Question

4.2.2 quiz: electromagnetism
question 8 of 10
suppose the number of coils in the solenoid of an electromagnet is increased. what happens to the electromagnet?
a. its strength increases, then decreases.
b. its strength becomes less.
c. its strength remains the same.
d. its strength becomes greater.

Explanation:

The strength of an electromagnet is directly proportional to the number of coils in the solenoid. When the number of coils increases, the magnetic field produced by each coil adds up. So, more coils mean a stronger magnetic field.

Answer:

D. Its strength becomes greater.