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

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

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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

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

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