AP® Physics C: E & M

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Moderate

Calculating Current with Resistors in Parallel

APPHEM-D0XGZN

Three resistors of value $2R$, $R$, and $4R$ are wired in parallel to a battery with a voltage $V$. Derive an expression for the current on the resistor with a value of $R$.

A

$V/R$

B

$V/(7R)$

C

$(7V)/R$

D

$R/V$

E

$7RV$