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13 votes
13 votes
A flashlight bulb uses 190.1W of power when the current in the bulb is 0.64 A. What is the voltage?

User Corbee
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1 Answer

20 votes
20 votes

Given:


\begin{gathered} P=190.1\text{ W} \\ I=0.64\text{ A} \end{gathered}

The power is given as,


P=VI

Here, P is the power, V is voltage and I is the current.

Rearranging equation in order to get voltage,


V=(P)/(I)

Putting all known values,


\begin{gathered} V=\frac{190.1\text{ W}}{0.64\text{ A}} \\ =297.03\text{ V} \end{gathered}

Therefore, the voltage is 297.03 V.

User Kayue
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2.8k points