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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
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.
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
Electromagnets are made up of
Select the correct alternative
An electromagnet is used in
What is an electromagnet?
Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horse shoe electromagnet ?
Name two factors on which the strength of magnetic field of an electromagnet depends ?
State two common uses of electromagnets ?
The incomplete diagram of an electric bell is given in fig. Complete the diagram and label its different parts ?
