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If you use an extension cord, current travels from the 120 V outlet, along one wire inside the cord, through the appliance you've plugged into the cord, and back to the outlet through a second wire in the cord. The total resistance of the two wires in a light-duty extension cord is 0.44Ω; the current through such a cord should be limited to 13 A. A 13 A shop vacuum is powered using this cord. What is the voltage drop across the vacuum?

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skyluke89

Answer:

5.72 V

Explanation:

The voltage drop across the vacuum can be found by using the Ohm's law:

V = RI

where

V is the voltage drop

R is the total resistance

I is the current

In this problem, we have

[tex]R=0.44 \Omega[/tex]

I = 13 A

So, using the equation we can find the voltage drop:

[tex]V=(0.44 \Omega)(13 A)=5.72 V[/tex]

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