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

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

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Materials and Components
With increase in temperature, the electrical conductivity would

Decrease in metals but increase in intrinsic semiconductor
Increase in metals but decrease in intrinsic semiconductor
Increase in metals as well as in intrinsic semiconductor
Decrease in metals as well as in intrinsic semiconductor

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Materials and Components
At room temperature the number of conducting electrons in an intrinsic semiconductor

Is small as compared to the number of valence electrons
Is almost equal to the number of valence electrons
Is a very small fraction of the number of valence electrons
Is about half the number of valence electrons

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