Question

It is a common notion that the earth's
magnetism is due to the
(a) presence of a huge permanent magnet in
the interior of the earth
(b) presence of electric currents circulating
in the interior of the earth
(C) presence of ions in the atmosphere due
to which currents are caused as the earth
rotates​

Answer 1

Answer:

Option b is correct bcoz earth also behaves as a large permanent magnate having both, North and South pole. North pole in northern hemisphere and south pole in southern hemisphere..