Question

For using a transistor as an amplifier, choose the correct option regarding the resistances of base-emitter \( (R_{BE}) \) and base-collector \( (R_{BC}) \) junctions.

• A. Both \( R_{BE} \) and \( R_{BC} \) are very low
• B. Very low \( R_{BE} \) and very high \( R_{BC} \)
• C. Very high \( R_{BE} \) and very low \( R_{BC} \)
• D. Both \( R_{BE} \) and \( R_{BC} \) are very high

Hint:

For amplifiers, a low \( R_{BE} \) and high \( R_{BC} \) ensure efficient operation of the transistor with high gain.

Answer 1

The Correct Option is B

Step 1: Understanding transistor resistances.
In a transistor used as an amplifier, the base-emitter junction should have a low resistance for efficient current flow, and the base-collector junction should have a high resistance to ensure high gain.
Step 2: Identifying the correct resistances.
For optimal amplifier performance, \( R_{BE} \) is low, and \( R_{BC} \) is high. This corresponds to option (B).