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प्रश्न
Select the correct alternative
An electromagnet is used in
विकल्प
electric oven
ammeter
electric bell
radio set
उत्तर
electric bell
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 electromagnet with soft iron core is a temporary magnet.
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 ______
What is an electromagnet?
Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
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.
