Question

Q3. Ravi made an electromagnet by winding 50 turns of wire over an iron screw. Mohan also
made an electromagnet by winding 100 turns over a similar iron screw.
(a)Which electromagnet will attract more pins? Give reason
(b) What happens when we bring pins near electromagnet and
(1) switch on the current?
(ii) switch off the current?
(c) Give any two practical uses of electromagnets.
(d)Do you think an electromagnet can be used for separating plastic bags from a garbage
heap?
(1+1+1+1=4)
(1x3=3)​

Answer 1

Answer:

The magnetic effect is openly depended on the number of turns of wire on the electromagnet. Therefore, pahelis electromagnet will attract additional pins as it has an additional number of turns of wire on it.

So, pahelis electromagnet is a strongest electromagnet.