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Electromagnetic Field Theory

Electromagnetic Field Theory
The electric flux is given D = (2y2 + z) Ix + 4xy Iy + x Iz C/m2. The volume charge density at point (-1, 0, 3) is

 - 4 C/m3.
 - 8 C/m3.
 - 2 C/m3.
 0 C/m3.

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Electromagnetic Field Theory
The force on a charge moving with velocity v under the influence of electric and magnetic fields is given by which one of the following

 q(E + V × B).
 q(E + B × V).
 q(H + V × E).
 q(E +V × H).

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Electromagnetic Field Theory
The main purpose of choke is

 to block low frequencies.
 to pass high frequencies.
 none of above.
  to pass low frequencies.

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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

 100 V.
 75 V.
 50 V.
 25 V.

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Electromagnetic Field Theory
An infinite non conducting sheet of charge has σ of 10-7 c/m3. Equipotential surface for a potential of 10 volts is.

  1.77 mm.
 0.
 0.88 mm.
 1.32 mm.

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Electromagnetic Field Theory
A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as

 A = cosφ Ir - sinφ Ir.
 A = cosφ Ir.
 A = sinφ Ir.
 A = cosφ Ir + sinφ Iφ.

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