Final answer:
To make v the subject of the formula, divide both sides by r to get v = i/r. Substituting i = 2 and r = 6, we find that the voltage v is approximately 0.333 volts.
Step-by-step explanation:
To make v the subject of the formula i = rv, we simply need to rearrange the equation. To do this, we divide both sides of the equation by r, giving us v = i/r. Now we have v as the subject of the formula.
To find voltage when i = 2 and r = 6, we substitute these values into the rearranged formula, yielding v = 2/6 which simplifies to v = 1/3. Therefore, the voltage v is approximately 0.333 volts.