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Electromagnetic Field Theory
Midway between two equal and similar charges, a third equal and similar charge is placed, then this third charge will
will move out of the field of influence of two charges.
not be equilibrium.
remain in stable equilibrium.
be in unstable equilibrium.
will move out of the field of influence of two charges.
not be equilibrium.
remain in stable equilibrium.
be in unstable equilibrium.
Answer
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Related Question
Electromagnetic Field Theory
The energy stored in the magnetic field at a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying an current at 10 A, is
0.015 J.
0.15 J.
1.15 J.
0.5 J.
0.015 J.
0.15 J.
1.15 J.
0.5 J.
Answer
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Electromagnetic Field Theory
Radiation intensity in a given direction is the
Power radiated per square metre
Power radiated per unit solid angle in that direction
Energy radiated per square metre
None of these
Power radiated per square metre
Power radiated per unit solid angle in that direction
Energy radiated per square metre
None of these
Answer
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Electromagnetic Field Theory
A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m
244 μN.
1440 μN.
1144 μN.
144 μN.
244 μN.
1440 μN.
1144 μN.
144 μN.
Answer
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Electromagnetic Field Theory
The work done by a force F = 4un - 3uy + 2uz N in giving a 1nC charge a displacement of (10 ux + 2uy - 7uz) m is
60 nj.
100 nj.
40 nj.
20 nj.
60 nj.
100 nj.
40 nj.
20 nj.
Answer
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Electromagnetic Field Theory
The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of
flux density.
cross-sectional area of conductor.
current flowing through the conductor.
length of conductor.
flux density.
cross-sectional area of conductor.
current flowing through the conductor.
length of conductor.
Answer
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