Question

According to Newton's Third Law, for every action there is an equal an opposite reaction. If the current on the wire is such so that the magnetic force on the wire points upward, what must be true?

1. There is no force on the magnet. All forces act on the wire to keep the net force equal to zero.
here is no force on the magnet. All forces act on the wire to keep the net force equal to zero.
2. There is an equal and opposite force on the magnet pointing to the left.
3. There is an equal and opposite force on the magnet pointing down.
4. There is an equal and opposite force on the magnet pointing up.
5. There is an equal and opposite force on the magnet pointing to the right.

Answer 1

3. There is an equal and opposite force on the magnet pointing down.