AP EAMCET · PHYSICS · Semiconductors
A change of volts takes place between the base and the emitter when an input signal is connected to the common emitter transistor amplifier. As a result, change takes place in the base current and a change of takes place in the collector current. The input resistance and current gain are
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Given: ΔIb=20 μA ΔIc=2 mAΔVBE=0.04 V Input resistance Rinput =VBEΔIb=0.0420×10-6=2 kΩ A.C. current gain β=ΔIcΔIb=2×10-320×10-6=100
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