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Electromagnetic Field Theory

Electromagnetic Field Theory
The force required to seperate two surfaces with a contact area measuring 5 cm by 6 cm, when flux density normal to the surface is 0.8 tesla, will be

 7640 N.
 76400 N.
 764 N.
 76.4 N.

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Electromagnetic Field Theory
Poyniting vector has the dimensions

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

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Electromagnetic Field Theory
Fleming's right hand rule may be applied to an electric generator to find out the direction of

 magnetic field.
 induced emf.
None of these
 rotor rotation.

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Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

 Infinity.
  2.16.
 Zero.
 4.32.

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Electromagnetic Field Theory
The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper cable of 60 mm diameter is

 3.2 µH.
 3.2 H.
 3.2 mH.
 32 mH.

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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

 8 A/m.
 4 A/m.
 2 A/m.
 1 A/m.

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