Hal makes an electromagnet with a 9-volt battery, wire, and a steel rod. What is the function of electric current in his electromagnet?
• Electric current powers the electromagnet.
• Electric current creates a magnetic field that charges the rod.
• Electric current attracts or repels charged objects.
• Electric current determines the strength of the magnet.
1 answer
Electric current creates a magnetic field that charges the rod.
1 answer