Solve the equation E = V + Ir for r.

Gabriel Ferrer asked Mar 13, 2023

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Gabriel Ferrer asked Mar 13, 2023

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24 votes

The given equation is

First, subtract V from each side.

$\begin{gathered} E-V=V-V+lr \\ E-V=lr \end{gathered}$

Second, divide each side by l.

$\begin{gathered} (E-V)/(l)=(lr)/(l) \\ r=(E-V)/(l) \end{gathered}$

Martin Sing answered Mar 19, 2023

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