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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?
Null vector.
Zero.
E.
| E |.
Null vector.
Zero.
E.
| E |.
Answer
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Related Question
Electromagnetic Field Theory
Which statement does not say that electrostatic field is conservative?
The work done in a closed path inside the fields is zero.
If is gradient of a scalar potential.
The potential difference between two points is zero.
If the curl of E is identically zero.
The work done in a closed path inside the fields is zero.
If is gradient of a scalar potential.
The potential difference between two points is zero.
If the curl of E is identically zero.
Answer
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Electromagnetic Field Theory
If an electric current carrying coil is placed in a uniform magnetic field in the direction of magnetic induction, then
the net force is zero but torque is finite.
the net force and torque on the coil are both zero.
the net force and torque are both finite.
the net force is finite but torque is zero.
the net force is zero but torque is finite.
the net force and torque on the coil are both zero.
the net force and torque are both finite.
the net force is finite but torque is zero.
Answer
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Electromagnetic Field Theory
A square corner reflector is used in which of the following?
Point-to-point communication
TV broadcast
All of these
Radio astronomy
Point-to-point communication
TV broadcast
All of these
Radio astronomy
Answer
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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 exits between the conductor and the ground. The maximum electric stress occur at
The upper surface of the conductor.
The ground surface.
Midway between the conductor and ground.
The lower surface of the conductor.
The upper surface of the conductor.
The ground surface.
Midway between the conductor and ground.
The lower surface of the conductor.
Answer
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Electromagnetic Field Theory
An electric field on a place described by its potential V = 20 (r -1 + r-2) where r is the distance from the source. The field is due to
A dipole.
A monopole.
A quardra pole.
Both of A and B.
A dipole.
A monopole.
A quardra pole.
Both of A and B.
Answer
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