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Electromagnetic Field Theory
The magnetic field required to reduce the residual magnetism to zero is called
Hysteresis.
Retentivity.
Saturation magnetism.
Coercivity.
Hysteresis.
Retentivity.
Saturation magnetism.
Coercivity.
Answer
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Related Question
Electromagnetic Field Theory
For an inductor, current is proportional to
magnetic field.
none of them.
voltage across the inductor.
both (A) and (B).
magnetic field.
none of them.
voltage across the inductor.
both (A) and (B).
Answer
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Electromagnetic Field Theory
The electric field on a plane is decribed by . The field due to
a dipole and a monopole.
a monopole.
none of above.
a dipole.
a dipole and a monopole.
a monopole.
none of above.
a dipole.
Answer
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Electromagnetic Field Theory
The field at any point on the axis of a current carrying coil will be
zero.
perpendicular to the axis.
parallel to axis.
at angle of 45° with the axis.
zero.
perpendicular to the axis.
parallel to axis.
at angle of 45° with the axis.
Answer
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Electromagnetic Field Theory
A circular ring is carrying uniformly distributed charge q and a point charge – Q on the axis of the ring. The magnitude of dipole moment of the charge system is (Assume distance between centre of ring and point charge is d and radius of ring R)
QD.
QR.
QR2/d.
Q√(R2 + d2).
QD.
QR.
QR2/d.
Q√(R2 + d2).
Answer
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Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside
on outer surface in both.
None of above.
on outer surface in hollow and throughout in solid.
on outer surface in hollow and throughout in solid
on outer surface in both.
None of above.
on outer surface in hollow and throughout in solid.
on outer surface in hollow and throughout in solid
Answer
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