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A 4.0 kW clothes dryer is connected to a 220 V circuit. How much current does the dryer use?

User Gold
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1 Answer

12 votes
12 votes

Given:

The power take by the dryer is


\begin{gathered} P=4\text{ kW} \\ P=4000\text{ W} \end{gathered}

The dryer is connected to source of


V=220\text{ V}

Required: the current use by the dryer

Step-by-step explanation:

we know that power taken by any appliance is given by


P=VI

here, V is the voltage of the source and I is the current drawn by the electric appliance.

Plugging all the values in the above formula, we get


\begin{gathered} 4000\text{ W}=220\text{ V}I \\ I=\frac{4000\text{ W}}{220\text{ V}} \\ I=18.18\text{ A} \end{gathered}

Thus, the current used by the dryer is


18.18\text{ A}

User Nelson Owalo
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