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Magnetism and Electromagnetism

Magnetism and Electromagnetism
What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m?

16 AT
4 AT
10 AT
8 AT

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Magnetism and Electromagnetism
A magnetic field exists around

Aluminium
Moving Charges
Iron
Copper

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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 ?

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

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Magnetism and Electromagnetism
The direction of magnetic lines of force is

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

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Magnetism and Electromagnetism
The direction of a magnetic field within a magnet is

from south to north
from north to south
back to front
front to back

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Magnetism and Electromagnetism
What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?

22 x 10-6 N
22 x 10"8 N
22 x 10"7 N
22 x 10"5 N

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MORE MCQ ON Magnetism and Electromagnetism

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