Read the passage about an investigation and answer the following question: Camila is performing an investigation in which she wraps a current-carrying wire around an iron rod. She places the north pole of a bar magnet near the top of the rod. The magnet moves away from the rod. Camila claims that a field exists between the rod and the magnet. Which argument best supports Camila’s claim? (1 point) Responses
The current in the wire has created a magnetic field with its north pole at the top of the rod.
The current in the wire has created a magnetic field with its south pole at the top of the rod.
The current in the wire has created a gravitational field with its north pole at the top of the rod.
The current in the wire has created a gravitational field with its south pole at the top of the rod.
The correct answer is: The current in the wire has created a magnetic field with its south pole at the top of the rod.
This option supports Camila's claim because when an electric current flows through a wire, it creates a magnetic field around the wire. According to the right-hand rule, the magnetic field produced by the current will have a north pole on one side of the wire and a south pole on the other side. Since the bar magnet moves away from the rod, it indicates that the magnet's north pole is attracted to the south pole of the magnetic field created by the current in the wire.