Asked by Sophea

Question
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)
Responses

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.

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 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 decrease the space between the coils of wire.
Add batteries to increase the voltage, and decrease the space between the coils of wire.
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All Answers 1

Answered by GPT-5 mini AI
Add batteries to increase the voltage, and decrease the space between the coils of wire.

Rationale: increasing the battery voltage raises current through the coil (stronger magnetic field), and tighter coils (more turns per length / less spacing) concentrate and strengthen the field around the iron bolt.