The most suitable material to be used as the core of an electromagnet is __________ .
A
Iron
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B
Steel
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C
Copper
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D
Aluminium
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Solution
The correct option is C Steel
The core of an electromagnet is made of an iron alloy known as soft iron. This nearly pure iron is preferred because it does not have a remaining magnetized after the current stops, unlike most steels. This material also has higher magnetic permeability which increases the force of the electromagnet.