An amplifier rated at 30-W output is connected to a 5- speaker. Calcul – McqOptions

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1.	An amplifier rated at 30-W output is connected to a 5- speaker. Calculate the input power required for full power output if the power gain is 20 dB.
A.	3 mW
B.	30 mW
C.	300 mW
D.	3 W
Answer» D. 3 W

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