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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Magnetic moment is a

scalar quantity
vector quantity
pole strength
universal constant

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Magnetism and Electromagnetism
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?

250 AT/m
2500 AT/m
0.25 AT/m
25 AT/m

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Magnetism and Electromagnetism
If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage

decreases
remains unchanged
reverses polarity
increases

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Magnetism and Electromagnetism
The commonly used material for shielding or screening magnetism is

Aluminium
Brass
Soft iron
Copper

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Magnetism and Electromagnetism
The main constituent of permalloy is

Tungsten
Cobalt
Chromium
Nickel

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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

BLI
Zero
None of the listed here
BLI2

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