Respuesta :
A: He reduced the number of loops in the wire.
Explanation: The fewer coils of solenoid there are around the magnet, the weaker the electromagnet is. FYI: The solenoid is the wire in the electromagnet.
Explanation: The fewer coils of solenoid there are around the magnet, the weaker the electromagnet is. FYI: The solenoid is the wire in the electromagnet.