Question

Yamin is running 50 feet of No. 14 wire (with a cross section of 4,110 cmils) to a load that draws current of 11 amps. What approximate voltage drop will he experience? A. 1.8 V B. 2.8 V C. 3.5 V D. 5.9 V

Answer 1

Resistance per 1000 feet for gauge 14 wire is given as

R = 2.525 ohm

now if wire is of length 50 feet only then the resistance is given as

`R = (2.525)/(1000)* 50`

`R = 0.126 ohm`

now if 11 A current flows through the wire then the voltage drop is given by ohm's law

`V = iR`

`V = 11 * 0.126`

`V = 1.4 Volts`

so most appropriate answer in given options is

A. 1.8 Volts