Question

what is the correct equation to relate amperes, watts and volts?
$\boldsymbol{i = w * r}$
$\boldsymbol{i = w/v}$
$\boldsymbol{i = v * w}$
$\boldsymbol{i = v/w}$

Explanation:

Step1: Recall power formula

The fundamental formula relating power (watts, $W$), voltage (volts, $V$), and current (amperes, $I$) is $W = V \times I$.

Step2: Rearrange for current $I$

Isolate $I$ by dividing both sides of the equation by $V$:
$\frac{W}{V} = \frac{V \times I}{V}$
Simplify to get $I = \frac{W}{V}$.

Answer:

B. I = W/V