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Magnetism and Electromagnetism

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
Ferrites are a sub-group of

Ferri-magnetic material
Paramagnetic material
Ferro magnetic material
Non-magnetic materials

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Magnetism and Electromagnetism
The stray line of magnetic flux is defined as

A line of magnetic flux which does not follow the designed path
The mean length of a ring shaped coil
A line of magnetic flux in a non-uniform field
A line vertical to the flux lines

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Magnetism and Electromagnetism
One telsa is equal to

1 Wb/m²
1 Wb/m
1 mWb/m²
1 Wb/mm²

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Joule
Ampere-hour
Coulomb
Ampere

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Magnetism and Electromagnetism
Indicate which of the following material does not retain magnetism permanently.

Soft iron
None of the listed here
Hardened steel
Stainless steel

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