Physics
Which of the following is an example of a magnetic keeper?
- Steel
- Nickel
- Soft iron
- Electromagnet
Related Questions
Which of the following is made when electricity is passed through it?
- Lodestone
- Natural magnet
- Permanent magnet
- Electromagnet
Which is not a method of demagnetising a magnet?
- Heating
- Hammering
- Suspending
- Alternating current
Match the columns.
Column A Column B 1. Artificial magnets (a) Giant magnet 2. Poles (b) Strong magnets 3. Electromagnet (c) Maximum strength of magnet 4. Self-demagnetisation (d) Temporary magnet 5. Earth (e) Poles left free Give reasons for the following statements.
(a) Wood cannot be magnetised.
(b) Magnetite was later on called leading stone.
(c) Magnetic compass is based on one of magnet's properties.
(d) Magnetic induction is temporary.
(e) Magnets should be stored properly.