Read the passage about an investigation.

Question

A student is performing an investigation in which she wraps a current-carrying wire around an iron rod. She laces the north pole of a bar magnet near the top of the rod. The magnet moves away from the rod. The student claims that a field exists between the rod and the magnet.
Which argument best supports her claim?

Which argument best supports her claim?
• A. The current in the wire has created a magnetic field with its north pole at the top of the rod.
• B. The current in the wire has created a magnetic field with its south pole at the top of the rod.
• c. The current in the wire has created a gravitational field with its north pole at the top of the rod.
• D. The current in the wire has created a gravitational field with its south pole at the top of the rod.

Answer 1

A. The current in the wire has created a magnetic field with its north pole at the top of the rod.