Question

Why is a magnetic Needle used in compass

Answer 1

A magnetic needle is used in compass as its magnetized needle exerts a torque which pulls the needle to point towards the Earth's North pole

Answer 2

Answer: Magnetic needles

Step  by step

The magnetic needles used in compasses are Magnetic in nature because the Earth has a strong magnetic dipole due to its dynamo effect which creates the magnetic field around the earth's surface. The North pole of the needle in the compass is attracted to the Magnetic South Pole of the Earth that points towards the Geographical North of the Earth.

The needle of the compass is placed such that it can rotate freely about its axis that is passing through the center of the needle.