Question

name material which can be used to make ( i )permanent magnet,( ii ) temporary magnet,(b)state two ways by which the strength of electromagnet can be increased..pls guys..​

Answer 1

Answer:

i)iron

ii)iron +Ni or cu

iii)By increasing the loops of wire around an iron rod.

or by passing the voltage or current into the wire......

u can make a temporary magnet by stroking a piece of steel or iron along permanent magnet

Answer 2

Answer:

(a)

(1) Steel

(2) soft iron

(b)

1. by increasing number of loops
2. by increasing the current or voltage

Explanation:

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