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Magnetism and Electromagnetism - Interview Questions and Answers

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1. Two infinitely long parallel conductors in vacuum anf' separated 1 metre between centres >rhen a current of 1 ampere flows thn. ugh each conductor, produce on each otLer a force of
A. 2 x 1(T2 N/m)
B. 2 x KT3 N/m
C. 2 x 10"5 N/m
D. 2x 1(T7 N/m)
Explanation:
2. Fleming's left hand rule is used to find
A. direction of magnetic field due to current carrying conductor
B. direction of flux in a solenoid
C. direction of force on a current car�rying conductor in a magnetic field
D. polarity of a magnetic pole
Explanation:
3. Air gap has_______eluctance as compared to iron or steel path
A. little
B. lower
C. higher
D. zero
Explanation:
4. A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be
A. zero
B. BLI
C. B2LI
D. BLI2
Explanation:
5. Indicate which of the following material does not retain magnetism permanently.
A. Soft iron
B. Stainless steel
C. Hardened steel
D. None of the above
Explanation:
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