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?

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.