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Electromagnetic Field Theory

Electromagnetic Field Theory
A medium is said to be isotropic when

 ∈ is zero.
 ∈ = μσ.
 ∈ = μ.
 ∈ is a scalar constant.

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

 Condenser.
 Capacitor.
 Variable Resistor.
 Inductor.

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Electromagnetic Field Theory
Tropospheric scatter propagation is not subject to any fading.

True
False

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Electromagnetic Field Theory
In above problem, if the inductance L1 and L2 in series aiding with 30 mH mutual inductance, then total inductance will be

 100 mH.
 50 mH.
 200 mH.
 150 mH.

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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

 1.15 J.
 0.15 J.
 0.015 J.
 0.5 J.

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Electromagnetic Field Theory
The minimum height of outer atmosphere is

100 km
200 km
400 km
150 km

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MORE MCQ ON Electromagnetic Field Theory

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