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Magnetism and Electromagnetism

Magnetism and Electromagnetism
One telsa is equal to

1 Wb/mm²
1 Wb/m
1 mWb/m²
1 Wb/m²

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Magnetism and Electromagnetism
Fleming's left hand rule is used to find

Direction of magnetic field due to current carrying conductor
Polarity of a magnetic pole
Direction of flux in a solenoid
Direction of force on a current carrying conductor in a magnetic field

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Magnetism and Electromagnetism
Temporary magnets are used in

Loud speakers
Generators
Motors
All of the listed here

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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
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?

300 At
150 At
200 At
100 At

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Magnetism and Electromagnetism
The susceptibility of paramagnetic materials generally lies between

KT4 and KT8
KT3 and 1CT6
1CT3 and 1CT7
10"2 and KT5

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MORE MCQ ON Magnetism and Electromagnetism

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