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प्रश्न
Name one device that uses an electromagnet.
उत्तर
The electromagnet is used in an electric relay.
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संबंधित प्रश्न
Name one device that uses an electromagnet.
Electromagnets are made up of :
Name the material used for preparing an electromagnet.
Why is soft iron used as the core of the electromagnet in an electric bell?
Name the material used for making the armature of an electric bell. Give a reason for your answer.
What is an electroscope? Describe the different stages of charging a gold leaf electroscope negatively with the help of a diagram.
Explain in detail the application of electromagnets.
Unlike magnetic poles ______ whereas like poles ______.
Assertion (A): When 2 long parallel wires, hanging freely are connected in parallel to a battery, they come closer to each other.
Reason (R): Wires carrying current in opposite directions repel each other.
Explain the working of the following device.
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