Question

What is the power rating of a heating coil with a resis-tance of 12 12 that draws a current of 20 A?

Answer 1

According to the problem, we have the following

`\begin{gathered} R=12 \\ I=20 \end{gathered}`

We have to use Ohm's law

`V=I\cdot R`

Let's replace the given information

`V=20\cdot12=240`

Hence, the power is 20 Volts.