Question

Given below are two statements:
Assertion (A): FETs are in general more suitable than BJTs particularly at low frequencies.
Reason (R): The reason of more suitability of FETs than BJTs at low frequencies is their high input resistance and high power gain.

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

Hint:

FETs are preferred where high input resistance and low loading are required.

Answer 1

The Correct Option is C

Concept:
FETs are voltage-controlled devices and BJTs are current-controlled devices. FETs have very high input resistance.

Step 1: Check Assertion.
FETs are often preferred in low-frequency and high-input-impedance applications because they load the previous stage very little. \[ A \text{ is correct} \]

Step 2: Check Reason.
The reason says FETs are more suitable because of high input resistance and high power gain. High input resistance is correct, but high power gain is not the usual advantage of FETs over BJTs. \[ R \text{ is not correct} \]

Step 3: Final conclusion.
Assertion is correct but Reason is not correct. \[ \therefore \text{Correct Answer is (C)} \]