Question

Very strong magnets are:

• A. natural magnets
• B. permanent magnets
• C. electromagnets
• D. none of the above

Answer 1

The correct option is C

electromagnets

Explanation of correct option:

(c) Electromagnet:

1. Electromagnet are the substances in which the properties of a magnet are induced by electrical current.
2. Electromagnet are made for various uses like in electric bells, radios, television etc.
3. A strong/powerful magnetic field is required for these equipments to work efficiently.
4. These are not permanent magnets, as soon as the electricity is off the magnetic effect is lost.

Explanation of incorrect option:

(a) The natural magnets are used for lighter works like drawing magnetic field lines, in a compass for direction, etc.

(b) Natural magnets are permanent magnets but are not strong enough.

So, the correct option is (c).