Question

which substance are used for making electromagnets

Answer 1

The Substance Should Be Ferromagnetic .
Such As Iron , Nickel Or Cobalt.

Answer 2

How does an electromagnet work ?

An electromagnet produces magnetic field only when current is passed through it.

Some characteristics to know :

(i) The current can be increased .

(ii) The direction of the magnetic field lines can be changed.

(iii) The strength of the magnetic field can be increased

The substance that are used are as follows :-

(i) Magnetic or ferro-magnetic substances like iron .

(ii) Soft iron piece or core.

(iii) A battery for the electric current .

Hope it helps :-)

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