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Electromagnetic Field Theory

Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 repulsive.
 zero.
 attractive.
 none of above.

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Electromagnetic Field Theory
Find the length of a conductor which is moving with a velocity 0.4m/s in a magnetic field of 8T, inducing an emf of 20V.

 5.25m.
 0.6m.
 0.5m.
 6.25m.

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Electromagnetic Field Theory
Electric flux in coulombs emanating from any surface of a cube containing C coulombs of charge at its centre is

 Q / 6.
 4πQ / 6ε.
 Q / 4π.
 Q / 6ε.

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

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

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Electromagnetic Field Theory
Two coils have inductances L1 = 1200 mH and L2 = 800 mH. They are connected in such a way that flux in the two coils aid each other and inductance is measured to be 2500 mH, then Mutual inductance between the coils is ___________ mH.

 150.
 225.
 145.
 250.

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Electromagnetic Field Theory
The electric flux is given D = (2y2 + z) Ix + 4xy Iy + x Iz C/m2. The volume charge density at point (-1, 0, 3) is

 - 4 C/m3.
 - 8 C/m3.
 0 C/m3.
 - 2 C/m3.

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MORE MCQ ON Electromagnetic Field Theory

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