Materials and Components
Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

None of these
In a direction anti parallel to magnetic field
Normal to both current and magnetic field
In the same direction as current

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Materials and Components
An atom of a rare gas is placed is an electric field E. Then

The nucleus will not be shifted.
The nucleus will be shifted in the direction of E by an amount which is independent of E.
The nucleus will be shifted in a direction opposite to that of E.
The nucleus will be shifted in the direction of E by an amount which is proportional to E.

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Materials and Components
When a material is in superconducting state and a magnetic field is applied

The superconducting property may be affected and resistivity may increase from zero to a low value
The superconducting property is not affected
The material may become an insulator
The superconducting property may be destroyed

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