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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of following circuit element stores energy in electro-magnetic field?

 Capacitor.
 Variable Resistor.
 Condenser.
 Inductor.

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Law of conservation of energy.
 Newtons law of motion.
 Gauss theorem.
 Newtons law of gravitation.

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

 Commutator.
 Copper conductors.
 Electric fields.
  Electric current.

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Electromagnetic Field Theory
1 Tesla =

 1 wb- m2.
 1 wb/ m2.
 1 wb .
 1 wb/m.

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Electromagnetic Field Theory
What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m

 8.4 mm.
 10 mm.
 2.4 mm.
 4 mm.

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Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside

 on outer surface in hollow and throughout in solid.
 on outer surface in hollow and throughout in solid
 None of above.
 on outer surface in both.

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