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Related Questions

• A step-down transformer is connected to 2400 volts line and 80 amperes of current is found to flow in output load. The ratio of the turns in primary and secondary coil is $20 : 1$. If transformer efficiency is 100%, then the current flowing in primary coil will be

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• Which of the following is constructed on the principle of electromagnetic induction

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• If a coil of $40$ turns and area $4.0 cm^2$ is suddenly removed from a magnetic field, it is observed that a charge of $2.0 \times {10^{ - 4}}C$ flows into the coil. If the resistance of the coil is $80\Omega $, the magnetic flux density in $Wb/{m^2}$ is

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• The current in a coil decreases from 1 A to 0.2 A. In 10sec. Calculate the coefficient of self inductance. If induced emf is 0.4 volt.

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• An air core solenoid has 1000 turns and is one metre long. Its cross-sectional area is $10 cm^2$. Its self inductance is

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