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Magnetism and Electromagnetism - Interview Questions and Answers

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21. The Biot-savart's law is a general modification of
A. Kirchhoffs law
B. Lenz's law
C. Ampere's law
D. Faraday's laws
Explanation:
22. The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength ?
A. 2500 AT/m
B. 250 AT/m
C. 25 AT/m
D. 2.5 AT/m
Explanation:
23. A material which is slightly repelled by a magnetic field is known as
A. ferromagnetic material
B. diamagnetic material
C. paramag>etic material
D. conducting material
Explanation:
24. . The unit of flux is the same as that of
A. reluctance
B. resistance
C. permeance
D. pole strength
Explanation:
25. One maxwell is equal to
A. 10 webers
B. 10 webers
C. 10 webers
D. 10 webers
Explanation:
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