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16 June, 18:48

An amplifier has a 50 watt output and a 5 watt input. what is the gain in decibels for this amplifier, rounded to the nearest decibel?

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  1. 16 June, 20:01
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    Gain in decibels is given by;

    Gain db = 10*log (Po/Pi), where Po = Power output, Pin = Power input

    Substituting;

    Gain in db = 10 * log (50/5) = 10 db
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