Question

A compass needle normally points toward Earth’s magnetic pole, which is near the North Pole. Which best explains why the needle moves away from the pole when it comes close to a current-carrying wire?

Current within the wire weakens the magnetic force of the pole.
Magnetism surrounding the wire weakens the magnetic force of the pole.
Current within the wire draws the needle toward the wire.
Magnetism surrounding the wire draws the needle toward the wire.

Answer 1

Magnetism surrounding the wire draws the needle toward the wire.

Explanation: a current in the wire produces a circular magnetic field (right‑hand rule). Near the wire this field is strong enough that the compass aligns with it instead of Earth's field, so the needle deflects away from the magnetic pole.