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Electromagnetic Field Theory

Electromagnetic Field Theory
An electric field of 1.92 × 103 N/C is maintained across two plates separated by 0.015 m. Potential difference across plates will be

 28.8 V.
 2.88 V.
 1.4 V.
 14.40 V.

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Electromagnetic Field Theory
An insulated metal sphere of 20 cm diameter is charged by rubbing with charges 2 × 10-8 C. Potential developed will be

 0 V.
 900 V.
 1800 V.
 200 V.

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Electromagnetic Field Theory
Find the strength of the magnetic field when a 2m long conductor is moving with a velocity 4m/s inducing an emf of 20V.

 5T.
 0.5T.
 10T.
 2.5T.

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Electromagnetic Field Theory
Unit of electric flux density is

 farad / meter.
 weber / meter2.
 coulomb / meter2.
 coulomb.

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Electromagnetic Field Theory
Fleming's right hand rule may be applied to an electric generator to find out the direction of

 induced emf.
 rotor rotation.
 magnetic field.
None of these

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Electromagnetic Field Theory
For a linear electromagnetic circuit, which of the following statement is true?

 Field energy is equal to the co-energy.
 Co-energy is zero.
 Field energy is greater than the co-energy.
 Field energy is lesser than the co-energy.

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