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September 5, 2015

Homework Help: PHYSICS

Posted by JOTHEY on Friday, March 5, 2010 at 11:19am.

A stereo amplifier creates a 3.5 V potential difference across a speaker.

To double the power output of the speaker, the amplifier's potential difference must be increased to:

A. 7.0 V
B. 9.9 V
C. 12 V
D. 4.9 V

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