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For a conductor obeying Ohm's law, which equation correctly relates potential difference $V$, current $I$, and resistance $R$?

A$V = I/R$
B$V = R/I$
C$V = IR$
D$V = I^2R$
Answer & Solution
Correct answer: C. $V = IR$
The mathematical form of Ohm's law is $V = IR$. Rearranging it also gives $R = V/I$.
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