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प्रश्न
What is an electromagnet? What do you know about the simplest form of an electromagnet?
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उत्तर
The electromagnet is a temporary magnet which can be magnetized or demagnetized in a very short time as per our requirements. In the simplest form, an electromagnet consists simply of a soft iron core around which a large number of turns of insulated wire are wound. Two of the simple forms of an electro magnet are shown in the figure alongside.
संबंधित प्रश्न
The magnetic flux through a loop varies according to the relation Φ = 8t2 + 6t + C, where ‘C’ is constant, 'Φ' is in milliweber and 't' is in second. What is the magnitude of induced e.m.f. in the loop at t = 2 seconds.
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(a) north pole
(b) east pole
(c) south pole
(d) west pole
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- The magnet is then rapidly pulled out the coil.
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