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22 August, 01:42

Each of the two wires in a particular 16-gauge extension cord has an electrical resistance of 0.04 V. You're using this extension cord to operate a toaster oven, so a current of 15 A is fl owing through it. What is the voltage drop across each wire in this extension cord?

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  1. 22 August, 01:52
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    Given Information:

    Current flowing through wire = I = 15 A

    Resistance of the wire = R = 0.04 Ω

    (typing error in the question, unit of electrical resistance is ohms Ω)

    Required Information:

    Voltage drop across wire = V = ?

    Answer:

    Voltage drop across wire = V = 0.6 Volts

    Explanation:

    Recall Ohm's law which relates voltage across the wire and the current flowing through the wire,

    V = IR

    Where R is the resistance of the wire which basically opposes the flow of current in the wire.

    V = 15*0.04

    V = 0.6 Volts

    Therefore, the voltage drop across the wire in the extension cord is 0.6 Volts.
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