Question

Pick the correct options.
(a) Magnetic field is produced by electric charges only
(b) Magnetic poles are only mathematical assumptions having no real existence
(b) A north pole is equivalent to a clockwise current and a south pole is equivalent to an anticlockwise current.
(d) A bar magnet is equivalent to a long, straight current.

Answer 1

Explanation:

(a) Magnetic field is produced by electric charges only

(b) Magnetic poles are only mathematical assumptions having no real existence

(b) A north pole is equivalent to a clockwise current and a south pole is equivalent to an anticlockwise current.

(d) A bar magnet is equivalent to a long, straight current.