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प्रश्न
State the purpose of the iron core.
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उत्तर
The purpose of the iron core is to intensify the strength of the magnetic field inside the solenoid and thereby increase the strength of the electromagnet.
संबंधित प्रश्न
You are given an iron nail, a torch cell, and a long piece of insulated copper wire. With the help of a labelled neat diagram, describe in steps how you will make the nail, an electromagnet.
How does a magnetic field set up by a solenoid change when number of turns are increased?
Why is soft iron generally used as the core of the electromagnet?
State two advantages of an electromagnet over a bar magnet.
What will be the effect on the working of an electric bell if instead of a direct current an alternating current is used?
What energy conversion takes place during the working of a d c motor?
State the energy change that takes’place in a D. C. motor.
State the principle of a D. C. motor.
State and explain Maxwell’s Cork Screw Rule.
Which magnet will you use?
Iron is to be separated from trash.
