Question

if a switch is damaged can one use an iron nail to take its place explain why​

Answer 1

Answer:

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Explanation:

When you place an iron nail in current carrying coil, it gets ... When you remove the supply the nail will get ... Is it okay to make an inductor using a soft iron core.

Answer 2

Answer:

Yes

Explanation:

When you place an iron nail in current carrying coil, it gets magnetized temporarily. Basically it starts acting like an electro-magnet. When you remove the supply the nail will get demagnetized again.

Now why this happens:

When you give a supply to a coil then it generates an axial magnetic field. When you place the nail in the coil, this magnetic field causes all the domain to align parallel to the magnetic field lines. This introduces a temporary magnetism in the nail. When the supply is removed, the magnetic field also vanishes due to which these domains come to their original position and magnetism is lost.