1
Answer the following questions.
electromagnet
a)
What are magnetic and non-magnetic substances?
b)
Write any five properties of a magnet.
(c)
What are the laws of magnetic poles?
(d)
What are the methods of avoiding demagnetization?
How can an iron nail be magnetized permanently? Show with
of a diagram
a (1)
What is an electromagnet? Can we make an electromagne
o; (g) Which type of magnetic body, hard or soft, is preferred
electromagnet and why?
€ (n) is an electromagnet temporary or permanent magnet? V
(0)
How can you increase the strength of an electromagnet
()
What are the uses of electromagnets?
muis an electromagnet made?
copper? Why?