- #1
Alice7979
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Homework Statement
A battery has an emf of V and an internal resistance of r. What resistance R, when connected across the terminals of this battery, will cause the terminal voltage of the battery to be
A. r= R
B. R= 4r
C. R= r/4
Homework Equations
V=IR
The Attempt at a Solution
Req= r+R
= V/I' + V/I''
= ? + V/2I''