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Electromagnetic Field Theory

Electromagnetic Field Theory
The force experienced by a current carrying conductor lying parallel to a magnetic field is

 Bil cosθ.
 Bil sinθ.
 BIL.
 zero.

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Electromagnetic Field Theory
How much current must flow in a loop of radius 1m to produce a magnetic field of 1 mA/m?

 2.5 mA.
 1mA.
 2 mA.
 1.5 mA.

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory
For an inductor, current is proportional to

 both (A) and (B).
 none of them.
 voltage across the inductor.
 magnetic field.

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Electromagnetic Field Theory
The energy stored in the magnetic field in a solenoid 10 cm long and 4 cm diameter wound with 2000 turns of wire carrying a current at 20 amp, is

 12 joules.
 24 joules.
 30 joules.
 15 joules.

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Electromagnetic Field Theory
The radiation pattern of a parabola antenna is

A figure of directional
Omnidirectional
None of these
Highly directional

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Electromagnetic Field Theory
A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be

 20 N.
 15 N.
 3.75 N.
 7.5 N.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electromagnetic Field Theory

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