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Electromagnetic Field Theory
For an inductor, current is proportional to
none of them.
voltage across the inductor.
magnetic field.
both (A) and (B).
none of them.
voltage across the inductor.
magnetic field.
both (A) and (B).
Answer
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Related Question
Electromagnetic Field Theory
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at
the ground surface.
lower surface of the conductor.
midway between the conductor and ground.
upper surface of the conductor.
the ground surface.
lower surface of the conductor.
midway between the conductor and ground.
upper surface of the conductor.
Answer
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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.
106 Amp/sec.
106 Amp.
106 volts/sec.
106 volts.
106 Amp/sec.
106 Amp.
106 volts/sec.
Answer
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Electromagnetic Field Theory
The hysteresis loop of a magnetic material has an area of 5 cm2 with the scale given as 1 cm = 2 AT and 1 cm = 50 mwb At 50 Hz; the total hysteresis loss is
15 W.
25 W.
50 W.
20 W.
15 W.
25 W.
50 W.
20 W.
Answer
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Electromagnetic Field Theory
A solid sphere made of insulating material has a radius R and has a total charge Q distributed uniformly in its volume. What is the magnitude of electric field intensity, E, at a distance r (o less than r less than R) inside the sphere
Qr/(4 π εo R3).
QR/(4π εo r3).
Q/(4 π εo r3).
3 Qr/(4 π εo R3).
Qr/(4 π εo R3).
QR/(4π εo r3).
Q/(4 π εo r3).
3 Qr/(4 π εo R3).
Answer
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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.
6.25m.
0.5m.
0.6m.
5.25m.
6.25m.
0.5m.
0.6m.
Answer
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