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प्रश्न
Write true or false for a given statement.
An electric bell uses an electromagnet.
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
Select the correct alternative
Electromagnets are made up of
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 ?
State two ways by which the strength of magnetic field of an electromagnet can be increased ?
State two common uses of electromagnets ?
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 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.
