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प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
पर्याय
True
False
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उत्तर
False
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संबंधित प्रश्न
Fill in the blank
The strength of the magnetic field of an electromagnet is increased by inserting a core of soft ______
Select the correct alternative
An electromagnet is used in
Select the correct alternative
The purpose of armature in an electric bell is
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State two common uses of electromagnets ?
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The following diagram shows four circuits A, B, C and D. Each circuit has a cell and a torch bulb. Name the circuits in which the bulb will glow? Give reason to your answer.
Describe the construction and working of an electric bell with the help of a diagram.
