heat produced by the lightbulb. light produced by the lightbulb. electric field produced by the battery. magnetic field produced by the electric current.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student used two long wires to connect a lightbulb to a battery. The student noticed that as soon as the circuit was complete, a nearby compass started to point in a direction other than north. The compass pointed in a different direction because it was reacting to the
Possibilities:
- heat produced by the lightbulb.
- light produced by the lightbulb.
- electric field produced by the battery.
- magnetic field produced by the electric current.

magnetic field produced by the electric current.