EC.17)Characteristics of a Voltage Follower circuit are(a)high input impedance, low output impedance,unity gain
(b)high input impedance, high output impedance, unity gain
(c)low input impedance, high output impedance,no unity gain
(d)High input impedance, low output impedance, no unity gain
Answer is (a)
Voltage Follower is a circuit in which the output simply follows the input, then what makes the need of such a circuit ?. I read that the High Input impedance in such circuits draws less current from the input.
