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Which one of the following is not made o...

Which one of the following is not made of soft iron?

A

electromagnet

B

core of transformer

C

core of dynamo

D

magnet of loudspeaker

Text Solution

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The correct Answer is:
D
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  9. A circular coil of 20 turns and radius 10 cm is placed in a uniform ma...

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  10. A circular coil of 30 turns and radius is 8.0 cm carrying a current of...

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  11. A circular coil of 30 turns and radius is 8.0 cm carrying a current of...

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  12. A uniform magnetic field of 1.5T exists in a cyllinserical region of r...

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  13. A uniform magnetic field of 1.5T exists in a cyllinserical region of r...

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  16. A toroid has a core (nonferromagnetic) of inner radius of 25 cm and ou...

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  17. A toroid has a core (nonferromagnetic) of inner radius of 25 cm and ou...

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