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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of following is not a unit of flux?

 Weber.
 All of above.
 Telsa.
 Maxwell.

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Electromagnetic Field Theory
Poyniting vector has the dimensions

 Watt × metre2.
 Watt × metre.
 Watt/metre.
 Watts/metre2.

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Electromagnetic Field Theory
A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by

 Zero.
  abω Bo sinω t.
 ab Bo cosω t.
 Bo ω sinω t.

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Electromagnetic Field Theory
The energy stored in the magnetic field at a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying an current at 10 A, is

 0.015 J.
 0.15 J.
 0.5 J.
 1.15 J.

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Electromagnetic Field Theory
It was suggested by _____________ that the electric field should be imagined to be divided into tubes of force containing a fixed number of line of force

 all of above.
 Faraday.
 Kelvin.
 Newton.

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Electromagnetic Field Theory
The operation of electric generators and motors depend on the intraction between magnetic field and

 Copper conductors.
  Electric current.
 Electric fields.
 Commutator.

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