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Electromagnetic Field Theory

Electromagnetic Field Theory
When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.

No
Yes

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Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is

 zero.
 finite.
 infinite.
 none of tha above.

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Electromagnetic Field Theory
Self inductance of magnetic coil is proportional to

 1 / N2.
 N.
 N2.
 1 / N.

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Electromagnetic Field Theory
Magnetic flux density emerging out of a closed surface is

 zero.
 depends on magnetic movements inside the closed surface.
 infinite.
 depends on magnetic movements outside the closed surface

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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
Which of the following is multiband HF receiving antenna?

Log-periodic
Square loop
Conical horn
Folded dipole

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