Question 23 (Choice 1) - Physics CBSE Class 12 Sample Paper for 2023 Boards - Solution - Solutions to CBSE Sample Paper - Physics Class 12

Last updated at August 12, 2026 by Teachoo

The figure shows a piece of pure semiconductor S in series with a variable resistor R and a source of constant voltage V. Should the value of R be increased or decreased to keep the reading of the ammeter constant, when semiconductor S is heated? Justify your answer

Question 23 - The figure shows a piece - teachoo.jpg

Answer:

To keep the reading of ammeter constant value of R should be increased as with the increase in temperature of a semiconductor, its resistance decreases and current tends to increase.

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