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A 12.0 V battery causes a current of 2.0 A to flow through a lamp. What is the power used by the lamp?

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Given:

the voltage of the battery is


V=12\text{ V}

The current is,


I=2.0\text{ A}

Required: Power used by the lamp

Step-by-step explanation:

the power is given by


P=VI

Plugging all the values in the above formula, we get:


\begin{gathered} P=12\text{ V}*2\text{ A} \\ P=24\text{ watt} \end{gathered}

Thus, the power used by the lamp is 24 watt.

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