Logarithims and Exponents
Not what you're looking for?
If the amplitude ratio, N in decibels, of an electrical system is given by the formula;-
N=10log(Po [output]/Pi [input])
and the power is given by;-
P=V^2/R
Show that for matched input and output resistances the output voltage V[output] is related to V[input] by ;-
Vo[output]=Vi [input] 10^(N/20)
If N is increased by 6dB, show that the output voltage is approximately doubled for the same input.
Purchase this Solution
Solution Summary
Logarithims and exponents are investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.
Purchase this Solution
Free BrainMass Quizzes
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Probability Quiz
Some questions on probability
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts