Question

a)How can the strength of the magnetised iron rod be increased?
b)What happens to the magnetised iron rod when current stops flowing?
c)What is the difference between steel rod and iron rod which are magnetised using this method?

Answer 1

Answer:

Explanation:

Hey mate here is your answer:

A:Putting a piece of iron or steel inside the coil makes the magnet strong enough to attract objects. The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage.

B:When current is stopped from flowing in the coil of wire, the iron nail no longer remains a magnet. Since the iron nail loses its magnetism, therefore, the steel pins do not cling to it anymore.

C:Steel is actually and alloy of iron and other elements (usually carbon). It is the iron in steel that makes it magnetic. So there is very little difference between iron and steel magnetically. What makes iron or steel magnetic is the crystalline structure.

Hope it helps you.

Answer 2

Answer:

a) iron rod can increase by increasing number loops of wire around irone core and by increasing the current voltage

b) the electromagnet remains as long the current is flowing in it it is stop then the iron rod will disappear and it no longer act as magnet

c) I don't know

Explanation:

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