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)%0D%0AResponses%0D%0A%0D%0AAdd batteries to increase the voltage, and increase the space between the coils of wire.%0D%0AAdd batteries to increase the voltage, and increase the space between the coils of wire.%0D%0A%0D%0AAdd batteries to increase the voltage, and decrease the space between the coils of wire.%0D%0AAdd batteries to increase the voltage, and decrease the space between the coils of wire.%0D%0A%0D%0AAdd batteries to decrease the voltage, and increase the space between the coils of wire.%0D%0AAdd batteries to decrease the voltage, and increase the space between the coils of wire.%0D%0A%0D%0AAdd batteries to decrease the voltage, and decrease the space between the coils of wire.
The correct answer is:
Add batteries to increase the voltage, and decrease the space between the coils of wire.