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प्रश्न
Select the correct alternative
An electromagnet is used in
पर्याय
electric oven
ammeter
electric bell
radio set
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उत्तर
electric bell
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संबंधित प्रश्न
Write true or false for a given statement.
An electric bell uses an electromagnet.
Select the correct alternative
The purpose of armature in an electric bell is
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 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.
