# SOLUTION: Hi the chapter im on is called Exponential and Logarithmic functions. I had a question on a word problem from it. Here it is: The voltage input of an amplifier is 0.5 volts. I

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Misc -> SOLUTION: Hi the chapter im on is called Exponential and Logarithmic functions. I had a question on a word problem from it. Here it is: The voltage input of an amplifier is 0.5 volts. I      Log On

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 Question 131555: Hi the chapter im on is called Exponential and Logarithmic functions. I had a question on a word problem from it. Here it is: The voltage input of an amplifier is 0.5 volts. Its voltage output is 52 volts. Use the formula d=10log(E base 0/E base 1), where d is the decibel voltage, E base 0 is the output voltage, and E base 1 is the input voltage to find the decibel voltage. Okay this question makes no sense to me so if someone can figure it out.. Thank u!Found 2 solutions by stanbon, josmiceli:Answer by stanbon(57282)   (Show Source): You can put this solution on YOUR website!The voltage input of an amplifier is 0.5 volts. Its voltage output is 52 volts. Use the formula d=10log(E base 0/E base 1), where d is the decibel voltage, E base 0 is the output voltage, and E base 1 is the input voltage to find the decibel voltage. ---------------------- d=10log(E base 0/E base 1) Substitute the values you are given to get: d = 10log(52/1) d = 10*1.716... d = 17.16 db ---------------- O is like the output of a loudspeaker E is like the voice of a person singing 17.16 is the gain in power produced by the amplifier. ============= Cheers, Stan H. Answer by josmiceli(9664)   (Show Source): You can put this solution on YOUR website!You are misinterpreting the and the The little "o" and "i" are not bases, they are called subscripts. All a subscript does is give you a way to narrow the definition of a variable. Example: Suppose is the rent I charge for apartments Maybe I use in a formula, but I want to know if the rent is for a 1-bedroom, 2-bedroom, or 3-bedroom = rent is for a 1-bedroom = rent is for a 2-bedroom = rent is for a 3-bedroom Just realise that sometimes little numbers do refer to the base for a log, just not in this case volts ( is voltage in) volts ( is voltage out) answer