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Electromagnetic Field Theory

Electromagnetic Field Theory
The divergence of a vector is a scalar, while the curl of a vector is another

Unit vector
None of these
Vector
Scalar

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Electromagnetic Field Theory
A conductor of length 1 metre moves at right angles to magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced emf in the conductor will be

 50 V.
 100 V.
 75 V.
 25 V.

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Electromagnetic Field Theory
The energy stored in the magnetic field in a solenoid 10 cm long and 4 cm diameter wound with 2000 turns of wire carrying a current at 20 amp, is

 24 joules.
 15 joules.
 12 joules.
 30 joules.

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Electromagnetic Field Theory
The transmitting antennas for lower frequencies (below 500 kHz) are generally

Horizontal suspended wire type
Vertical grounded wire type
Parabolic reflector type
Any of the above

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Electromagnetic Field Theory
Magnetic field intensity at centre of circular coil, of diameter 1 m and carrying a current of 2 A is

 4 A/m.
 2 A/m.
 8 A/m.
 1 A/m.

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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that

 the inductor is made of thin wire.
 the inductor is non linear.
 the above statement is false.
 the inductor has ferrite core.

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MORE MCQ ON Electromagnetic Field Theory

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