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Unformatted text preview: Version PREVIEW Hw03 Ross (10219) 1 This print-out should have 14 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. Serway CP 17 52 001 10.0 points Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 1 . 56 cm in diameter and carries a current of 93 A. Coppers resistivity is 1 . 68 10- 8 m . If the birds feet are 8 . 22 cm apart, what is the potential difference across its body? Correct answer: 671 . 931 V. Internal Resistance 002 10.0 points A 16 V battery delivers 110 mA of current when connected to a 70 resistor. Determine the internal resistance of the battery. Correct answer: 75 . 4545 . Transistor Radio 003 (part 1 of 2) 10.0 points A transistor radio operates by means of a 11 V battery that supplies it with 62 mA current. If the cost of the battery is 3 . 02 dollars and it lasts for 258 h, what is the cost per kWh to operate the radio in this manner?operate the radio in this manner?...
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