A common emitter amplifier has a voltage gain of 50, an

A common emitter amplifier has a voltage gain of 50, an input impedance of and an output impedance of The power gain of the amplifier is

Power gain = voltage gain × current gain

= V_G.I_G =	V₀	.	I₀
	V_i		I_i

=	V₀²	.	R_i	= 50 × 50 ×	100
	V_i²		R₀		200

=	2500	= 1250
	2