Question

How is the magnetism of help in navigation?

Answer 1

1. A magnetic needle which is present in compass when comes under magnetic field it moves.
2. In compass the needle is placed in such a way that can move in horizontal plane along the vertical axis.
3. A vertically suspended magnet or a needle always rest in North - South direction
4. This way a compass is used to detect navigation with respect to the earth's magnetic poles.