Question

How much power is used by a 10 V flashlight battery that draws 5.5 A of current?

Answer 1

In order to calculate the power used, we can use the formula:

$P=V\cdot I$

Where V is the voltage and I is the current.

So, using V = 10 and I = 5.5, we have:

$\begin{gathered} P=10\cdot5.5 \\ P=55 \end{gathered}$

So the power used by the flashlight is 55 W.