Question

Assertion (A): FET is a majority carrier device whereas BJT works based on movement of both majority and minority carriers. Reason (R): Thermal runaway occurs in FET circuits but does not occur in BJT circuits.

• A. Both (A) and (R) are correct and (R) is explanation
• B. Both (A) and (R) are correct but (R) is not explanation
• C. (A) is correct but (R) is incorrect
• D. (A) is incorrect but (R) is correct

Hint:

FET → stable, BJT → thermal runaway risk.

Answer 1

The Correct Option is C

Concept:
• FET → majority carrier device
• BJT → both carriers

Step 1: Assertion Correct.

Step 2: Reason Thermal runaway occurs in BJT, not in FET. \[ \Rightarrow \text{Reason is FALSE} \] \[ \therefore \text{Correct answer is (C)} \]