A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is

A power supply produces a 0.6 W output with an input of 0.7 W. Its pe

1.	A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is
A.	8.57 %
B.	42.85 %
C.	4.28 %
D.	85.7 %
Answer» E.

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A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is

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