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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The main constituent of permalloy is

Nickel
Chromium
Tungsten
Cobalt

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

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Magnetism and Electromagnetism
What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200?

12
8
6
4

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

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

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Magnetism and Electromagnetism
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

None of the listed here
Zero
BLI2
BLI

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Magnetism and Electromagnetism
Paramagnetic materials have relative permeability

equal to unity
slightly less than unity
slightly more than unity
equal to that ferromagnetic mate rials

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MORE MCQ ON Magnetism and Electromagnetism

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