A coil of 40 henry inductance is connected in series with a resistance of 8 ohm
A coil of 40 henry inductance is connected in series with a resistance of 8 ohm and of a 2 volt battery. The time constant of the circuit is
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(a) 5 sec […]
Electromagnetic Induction
A magnetic field of 1600 A/m produces a magnetic flux of 2.4 x 10⁻⁵ Wb
A magnetic field of 1600 A/m produces a magnetic flux of 2.4 x 10⁻⁵ Wb in an iron bar of cross-sectional area 0.2 cm². The susceptibility of the iron bar is
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(a) […]
A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length. A current of 5 A falls through it. The magnetic field at the axis inside the solenoid is
With the decrease of current in the primary coil from 2 amperes to zero value
With the decrease of current in the primary coil from 2 amperes to zero value in 0.01sec, the emf generated in the secondary coil is 1000 volts. The mutual inductance is
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(a) […]
Two coils of self inductance 2 mH and 8 mH are placed so close together
Two coils of self inductance 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is […]
The magnetic flux linked with a coil at any instant t is given by ?, find emf
The magnetic flux linked with a coil at any instant t is given by ?= (5t³ – 100t + 300). The e.m.f induced in the coil at t=2 sec is
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(a) 40 […]