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प्रश्न
Select the correct alternative
The purpose of armature in an electric bell is
विकल्प
to make and break the circuit
to produce sound
to produce magnetic field
to provide spring action
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.
Write true or false for a given statement.
An electromagnet with soft iron core is a temporary magnet.
What is an electromagnet?
Name the material of an electromagnet?
Name two factors on which the strength of magnetic field of an electromagnet depends ?
Name a domestic device in which an electromagnet is used ?
Draw a neat and labelled diagram of an electric bell and describe its working ?
The incomplete diagram of an electric bell is given in fig. Complete the diagram and label its different parts ?
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.
