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Electromagnetic Field Theory

Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be

 20 mH.
 5 mH.
 10 mH.
 15 mH.

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Electromagnetic Field Theory
A solid sphere made of insulating material has a radius R and has a total charge Q distributed uniformly in its volume. What is the magnitude of electric field intensity, E, at a distance r (o less than r less than R) inside the sphere

 3 Qr/(4 π εo R3).
 QR/(4π εo r3).
 Q/(4 π εo r3).
 Qr/(4 π εo R3).

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Electromagnetic Field Theory
MUF is highest in periods of greatest sunspot activity.

True
False

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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.

 0.
 1.32 mm.
  1.77 mm.
 0.88 mm.

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Electromagnetic Field Theory
Plane z = 10 m carries charge 20 C/m2. The electric field intensity at the origin is

  – 360 πuz v/m.
 – 10 uz v/m.
 – 72 πuz v/m.
 – 18 πuz v/m.

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Electromagnetic Field Theory
Two point charges (Q and – Q) are situated at the vertex of the square. If potential at another vertex is 2 V, so potential at opposite vertex (diagonally) is

 Zero.
 √ 2 V.
  2 V.
 1 V.

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