Question

What does the compass needles indicate about the iron nail?

Answer 1

Answer:

it indicates about the polarities of the iron nail

Answer 2

Answer:

• A small device called compass is used to know the magnetism are the magnetic field lines flowing in which direction.
• The compass has a small needle unit which is nothing but a kind of a small magnet and other iron needle when brought near the compass would react similarly as it reacts near a bar magnet.
• The flickering of the needle takes place when needle comes near the compass and the indication of the compass needle tells us about the magnetism present in the iron needle.