The O/P Power of a power amplifier is several times its input power. It is possible because

power amplifier introduces a -ve resistance

there is +ve feed back in the circuit

step up transformer is use in the circuit

power amplifier converts a part of I/P d.c. power into a.c. power

The O/P Power of a power amplifier is several times its input power. I

1.	The O/P Power of a power amplifier is several times its input power. It is possible because
A.	power amplifier introduces a -ve resistance
B.	there is +ve feed back in the circuit
C.	step up transformer is use in the circuit
D.	power amplifier converts a part of I/P d.c. power into a.c. power
Answer» E.