Making a Magnet
In an electric bell, striker is attracted by a/an__________.
Q. A rectangular iron bar cannot be converted into a magnet.
An iron metal bar can be converted into a permanent magnet.
By rubbing it with a magnet for few minutes
It can't be converted
___ strikes at a piece of iron ore, a permanent magnet is formed.
Q. Soft iron pieces are placed across the ends of bar magnet when stored. What are such pieces called?
- Magnetic preservatives
- Magnetic refractors
- Magnetic keepers
- Magnetic reflectors
can be magnetised by rubbing it with a magnet from one end to the other.
- copper piece
- iron piece
Q. Satish magnetised a piece of iron marked W, X, Y and Z using the rubbing method as shown in the figure.
Which of these parts of the iron piece will become the north pole?
Q. If a magnet is broken into two pieces lengthwise, then how many poles does each piece have?
Q. How many soft iron piece(s) is/are required to store a horseshoe magnet?
Q. In the process of magentising an iron piece, where will the north pole be formed?