Question

The input and output resistances in a common base amplifier circuits are `400 Omega` and `400 K Omega` respectively. The emitter current is `2mA` and current gain is `0.98`.
Voltage gain of transistor is
A. `960`
B. `970`
C. `980`
D. `990`

Answer 1

Correct Answer - C
`A_(v)=alpha(R_(0))/(R_(1))=0.98 xx(400 xx10^(3))/(400)=980`.