If a wire carrying current causes the needle of a compass to move: O A. it disproves Ohm's law.
O B. it proves Ohm's law.
O C. it is an example of an open circuit.
O D. it demonstrates electromagnetism.
SUBN

D. it demonstrates electromagnetism.

Explanation:

If a wire carrying current causes the needle of a compass to move, it is an example of electromagnetism.

The interaction between electric and magnetic fields is termed electromagnetism.

close lines strong magnet less close weaker

increase masses, decrease separation