Question

E. Answer in 1 or 2 words/sentences.

1. Define a magnet.

2. Classify magnets based on:
a. how long the magnetism lasts
b. how they are made

3. You are at a job where you need a magnet. What kind of magnet will you choose if
a.no electricity is available.
b. electricity is available and a very strong magnet is required.

4. What is self-demagnetisation?

5. A bar B of some material is attracted to a magnet. Is the bar B magnetised?​

Answer 1

Answer:

Ans:-1 a piece of iron or other material

Ans:-4 Self demagnetisation, also referred to as shape demagnetisation, affects both the induced and remanent magnetisation of any magnetised body.