JEE PHYSICS MCQ: CURRENT ELECTRICITY

1 Medium

1 of 1

Understanding +4 | -1

In "

Al

" and "

Si

". If temperature is changed from normal temperature to

70 \mathrm{~K}

then

View answer and explanation

Correct option: B

The resistance of

{Al}

will decrease and that of

{Si}

will increase

Option A (The resistance of Al will decrease and that of Si will increase) is correct because the resistance of a metal (Al) decreases with decreasing temperature, while the resistance of a semiconductor (Si) increases with decreasing temperature.

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