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प्रश्न
Select the correct alternative
The purpose of armature in an electric bell is
पर्याय
to make and break the circuit
to produce sound
to produce magnetic field
to provide spring action
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उत्तर
to make and break the circuit
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संबंधित प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
Write true or false for a given statement.
An electric bell uses an electromagnet.
Select the correct alternative
Electromagnets are made up of
Select the correct alternative
An electromagnet is used in
Name two factors on which the strength of magnetic field of an electromagnet depends ?
State two ways by which the strength of magnetic field of an electromagnet can be increased ?
State two common uses of electromagnets ?
Draw a neat and labelled diagram of an electric bell and describe its working ?
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.
