In common collector configuration of BJT, which of the following options is correct?
1
It has very high input impedance due to the presence of emitter resistance.
2
It has a lower input impedance than a common-emitter amplifier.
3
The input characteristics are a plot of input current (IB) vs. input voltage (VBE) for a constant IE.
4
If the emitter resistance is bypassed with a capacitor, the input impedance increases.