Advertisements
Advertisements
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
Advertisements
उत्तर
to make and break the circuit
APPEARS IN
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.
Fill in the blank
An electromagnet is used to separate large mass of ______ scrap.
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
Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
State two ways by which the strength of magnetic field of an electromagnet can be increased ?
Name a domestic device in which an electromagnet is used ?
The incomplete diagram of an electric bell is given in fig. Complete the diagram and label its different parts ?
