Question

a long wire carries a current toward the south in a magnetic field that is directed vertically upward, perpendicular to the surface of earth. what is the direction of the magnetic force on the wire? west north east south no magnetic force is exerted on the wire.

Explanation:

Step1: Apply right - hand rule

The right - hand rule for the magnetic force on a current - carrying wire is used. Point the fingers of your right hand in the direction of the current (south) and curl them towards the direction of the magnetic field (vertically upward). Your thumb will then point in the direction of the magnetic force.

Step2: Determine the direction

When you perform the right - hand rule as described above, the direction of the magnetic force is west.

Answer:

west