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The magnetic field strength of a solenoid can be increased by inserting which of the following materials as the core?

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The magnetic field strength of a solenoid can be increased by inserting which of the following materials as the core?

(a) Copper

(b) Silver

(c) Iron

(d) Aluminium

I had been asked this question by my school principal while I was bunking the class.

I want to ask this question from Magnetic Field of a Solenoid topic in portion Electromagnetism of Basic Electrical Engineering

1 Answer

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Best answer
Right choice is (c) Iron

Easy explanation: The Magnetic field of a solenoid increases when we insert an iron core because iron is a ferromagnetic material and ferromagnetic materials help in increasing the magnetic property.

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