Question

You wrap a wire around a piece of iron. If you slowly increase the strength of an electric current flowing through the wire, you would expect _____.
A. the magnet to become stronger
B. the magnet to stop producing a field
C. the wire to move
D. the wire to unwrap

Answer 1

The correct answer is A. the magnet to become stronger

The stronger the electric current in the piece of metal, the stronger the magnetic field will be.

Answer 2

If we wrap a wire around a piece of iron. If we slowly increase the strength of an electric current flowing through the wire, as a result  the magnetic field become stronger so the most appropriate answer will be A. the magnet to become stronger.