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 percentage of efficiency is: A. 8.57% B. 42.85% C. 4.28% D. 85.7%
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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: 85.7%

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