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ID: 2033328 • Letter: D
Question
d?wKU Topnet?1T Helpdesk?wKU Libraries?UndergraduateCatai h waj Herald tu wcu sa G Google bang Home I Student: a Class t I Help Chapter 30-Current and Resistance Begin Date: 3/20/20 18 12:01.00 AM Due Date:3/29/2018 11.59.00 PM End Date: 3/2 00-gauge copper wire has a diameter of 9 266 mm and a resistivity of 1.72 x 102m Calculate the power loss in a kilometer of such wire, in watts, when it carries 1.05 x 10 A Pot sino Suh Attes ota asino acos0 atan0 acotan sinh0 coshO ncotanh0 4 5 6 1 2 3 . Degrees Radians Submit Hints: 19% deduction per hart. Hints remaining Feedback: deduction per feedbackExplanation / Answer
r = d / 2 = 9.266 mm / 2 = 4.633 mm
R = p L / A
= (1.72 * 10-8 * 1000) / (pi * (4.633 * 10-3)2)
R = 0.255 ohm
power = I2 * R = 1052 * 0.255
= 2811 W = 2.81 * 103 W
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