A student made an electromagnet using an iron bolt, copper wire coiled three times around the bolt, and a battery. How can he increase the strength of his magnet?(1 point)

Question

Responses

Add batteries to decrease the voltage, and decrease the space between the coils of wire.
Add batteries to decrease the voltage, and decrease the space between the coils of wire.

Add batteries to increase the voltage, and increase the space between the coils of wire.
Add batteries to increase the voltage, and increase the space between the coils of wire.

Add batteries to increase the voltage, and decrease the space between the coils of wire.
Add batteries to increase the voltage, and decrease the space between the coils of wire.

Add batteries to decrease the voltage, and increase the space between the coils of wire.
Add batteries to decrease the voltage, and increase the space between the coils of wire.

Answer 1

To increase the strength of the electromagnet, the student should add batteries to increase the voltage, and decrease the space between the coils of wire.

Increasing the voltage increases the current flowing through the wire, which enhances the magnetic field. Decreasing the space between the coils increases the density of the magnetic field generated around the wire.

So, the correct response is: Add batteries to increase the voltage, and decrease the space between the coils of wire.