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Related Questions

• Lenz's law is consequence of the law of conservation of

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• In a circuit with a coil of resistance 2 ohms, the magnetic flux changes from 2.0 Wb to 10.0 Wb in 0.2 second. The charge that flows in the coil during this time is

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• The mutual inductance of an induction coil is $5H$. In the primary coil, the current reduces from $5A$ to zero in ${10^{ - 3}}s$. What is the induced emf in the secondary coil

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• The inductance of a closed-packed coil of 400 turns is 8 mH. A current of 5 mA is passed through it. The magnetic flux through each turn of the coil is

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• A solenoid has 2000 turns wound over a length of 0.30 metre. The area of its cross-section is $1.2 \times {10^{ - 3}}{m^2}$. Around its central section, a coil of 300 turns is wound. If an initial current of 2 A in the solenoid is reversed in 0.25 sec, then the e.m.f. induced in the coil is

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