SOLUTION: solve formula for the indicated variable. I=E/R+r for R

Question 18999: solve formula for the indicated variable.
I=E/R+r for R

Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Ohm's law for the amount of current (I) in a cicuit having (R+r) ohms of resistance with an applied voltage of E volts.
Solve for R, multiply both sides by (R+r).
Expand (distributive property) the left side.
Subtract Ir from both sides.
Finally divide both sides by I.

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