Question

A transistor has a current gain of $30$. If the collector resistance is $6 \,k\Omega$, input resistance is $1 \,k\Omega$, its voltage gain is

• A. $90$
• B. $180$
• C. $45$
• D. $360$

Answer 1

Answer: (B)

$180$

Answer 2

Voltage gain $=$ current gain $\times$ resistance gain $=$ current gain $\times \frac{R_C}{R_I}$ $= 30 \times \frac{6}{1} = 180$