Computer Science - Electronic Principles - Discussion

Discussion Forum : Electronic Principles - Section 1 (Q.No. 17)

Electronic Principles

17.

Which one of the following phrases best describes residual magnetism?

Magnetism that remains in the core of an electromagnet after the current through the coil is turned off

The force of attraction between the poles of a permanent and temporary magnetic field

The amount of magnetic flux that is not confined to the core material of an electromagnet

The circular magnetic field that surrounds a conductor carrying a current

None of the above

Answer: Option

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