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