For this case we have a problem where we must apply the Ohm Law, this law states:
[tex]V = I * R[/tex]
Where:
The units of these three magnitudes in the international system of units are, respectively, volts (V), amps (A) and ohms (Ω).
According to the statement our data are:
[tex]I = 21[/tex] amps
[tex]R = 15[/tex]ohms
We want to find the voltage, like this:
[tex]V = 21 * 15[/tex] (amps * ohms)
[tex]V = 315[/tex] volts
Answer:
V = 315 volts
