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Electromagnetic Field Theory

Electromagnetic Field Theory
The magnetic intensity in A/m at the centre of circular coil of diameter 1m and carrying a current of 2A is

 8.
 3.
 4.
 2.

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Electromagnetic Field Theory
An infinite sheet has a charge density of 150 μ C/m. The flux density in μ C/m 2 is

 1/75.
 50.
 75.
 100.

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Electromagnetic Field Theory
If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying

 106 volts/sec.
 106 Amp/sec.
 106 Amp.
 106 volts.

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Electromagnetic Field Theory
Magnetic current is composed of which of the following?

None of these
 Only conduction current.
 Only displacement current.
 Both conduction and displacement current.

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Electromagnetic Field Theory
Conductor is static and the field is varying then emf will be induced. This principle is called

 static induced emf.
 virtually induced emf.
 dynamically induced emf.
 none of these

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Electromagnetic Field Theory
For a line characteristic impedance zo terminated is load zo/3, the reflection coefficient is

 2/3.
 – 1/3.
 1/3.
  – ½.

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