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Related Questions

• The self inductance of a coil is L. Keeping the length and area same, the number of turns in the coil is increased to four times. The self inductance of the coil will now be

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• An e.m.f. of $5 volt$ is produced by a self inductance, when the current changes at a steady rate from $3 A$ to $2 A$ in 1 millisecond. The value of self inductance 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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• A coil has an area of 0.05 m2 and it has 800 turns. It is placed perpendicularly in a magnetic field of strength $4 \times {10^{ - 5}}\,Wb/{m^2},$ it is rotated through ${90^o}$ in 0.1 sec. The average e.m.f. induced in the coil is

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• In an induction coil, the secondary e.m.f. is

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