Answer to Question #209880 in Electricity and Magnetism for Zunaira

Question

Common collector amplifier has an input resistance of Rin=10kΩ and load 

resistance of RL=100Ω. Power gain for this amplifier is 100. What is the voltage gain 

of the amplifier?

Answer 1

Gives

$R_{in}=10K\Omega$

$R_L=100\Omega$

$A_p=100$

$A_p=A_iA_v$

$A_v=\frac{A_p}{A_i}$

Put value

$A_v=\frac{100}{A_i}$

$A_i=\frac{R_L}{R_i}$

$$A_v=\frac{100}{A_i}=\frac{100}{\frac{R_L}{R_i}}=\frac{100\times10000}{100}=10^4$$

$A_v=10^4$