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Magnetism and Electromagnetism

Magnetism and Electromagnetism
What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10–3 m2?

9.7 T
91.7 T
91 T
917 T

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Magnetism and Electromagnetism
Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be

100 N
0.01 N
10 N
0.1 N

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Magnetism and Electromagnetism
A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?

6338 N/Wb
63.38 N/Wb
633.8 N/Wb
63380 N/Wb

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Magnetism and Electromagnetism
The direction of magnetic lines of force is

From one end of the magnet to another
From south pole to north pole
From north pole to south pole
None of the listed here

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Magnetism and Electromagnetism
Susceptibility is positive for

diamagnetic substances
non-magnetic substances
None of these
ferromagnetic substances

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Ampere-hour
Joule
Ampere
Coulomb

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MORE MCQ ON Magnetism and Electromagnetism

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