Last updated on August 30th, 2023 at 10:37 pm
You are given an iron strip. How will you make it into a magnet?
The following method can be used to turn an iron strip into a magnet:
Put the iron strip on a table. One pole of the bar magnet should be placed near one end of the iron strip. Starting at one end of the iron strip, move the bar magnet along the length. As you move in the same direction as before, lift the magnet and bring the pole to the starting point.
This process needs to be repeated at least 30-40 times for the iron strip to become a bar magnet.
How is a compass used to find directions?
The needle of a compass can freely rotate. The magnetic needle of a compass aligns in the north-south direction when a compass is kept at a particular location. Generally, the red arrow of the compass needle represents the north pole, and the other end represents the south pole.
A magnet was brought from different directions towards a toy boat that has been floating on water in a tub. The effect observed in each case is stated in Column I. Possible reasons for the observed effects are mentioned in Column II. Match the statements given in Column I with those in Column II.
Column I | Column II |
Boat gets attracted towards the magnet | Boat is fitted with a magnet with the north pole towards its head |
Boat is not affected by the magnet | Boat is fitted with a magnet with the south pole towards its head |
Boat moves towards the magnet when the north pole of the magnet is brought near its head | Boat has a small magnet fixed along its length |
Boat moves away from the magnet when the north pole is brought near its head | Boat is made of magnetic material |
Boat floats without changing its direction | Boat is made of a non-magnetic material |