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ELECTRIC CIRCUITS

Electric Circuits
In an AC circuit, containing pure inductance, the voltage applied is 120 V, 50 Hz while the current is 10 A. Find the value of inductance.

 34 mH.
 30 mH.
 35 mH.
 38 mH.

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Electric Circuits
A conductor of length l meters moves at right angles to a uniform magnetic field of flux density B = 1.5 T. if the velocity of revolution of the conductor is 50 ms-1 then induced e.m.f. in the conductor is

 75 V.
 0 V.
 125 V.
 100 V.

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Electric Circuits
A rectangular magnet of magnetic moment M is cut into two pieces of same length. The magnetic moment of each piece will be

 M.
 2 M.
 M / L.
 M / 2.

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Electric Circuits
The ratio of intensity of magnetisation to the magnetising force is known as

 none of above.
 relative permeability.
 flux density.
 susceptibility.

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Electric Circuits
Which of following is the unit of magnetic flux density?

 Lumens.
 Daraf.
 Tesla.
 Weber.

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