Q.Explain the working of RC coupled amplifier.

In an RC coupled amplifier the amplified output of one stage is passed to the next stage through a coupling capacitor, which transfers the AC signal while blocking the DC bias. …

[!TLDR]

An RC coupled amplifier passes the AC output of each stage to the next through a coupling capacitor that blocks DC; the two 180° reversals leave the final output in phase with the input, with overall gain equal to the product of the stage gains.

Circuit: a two-stage CE amplifier using voltage-divider bias. Each stage has resistors $R_1,R_2$ (bias), $R_C$ (collector load) and $R_E$ with bypass $C_E$. The collector of the first stage is connected to the base of the second through a coupling capacitor $C_c$; the input is coupled through $C_1$ and the output through $C_2$. …