- #1
SagarPatil
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Homework Statement
So a generation with an internal resistance r delivers a voltage E. The generator is connected to a electrical circuit with a resistance R. The work W done each second in sending a current through a circuit with a resistance R is given by W =E^2*R/(R+r)^2.
For constant r and E, show that W is a maximum when R=r. Sketch a graph of W as a function of R
Homework Equations
v=ir
The Attempt at a Solution
So, I am confused. I have solved for R, which is
R= (E^2/(2W))-r
If someone can explain the question, I will try to answer to question.
P.S it may look like a question from some electrical engineering book but its from a calculus book -.- (no answer)
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