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Homework 7-problems

# Homework 7-problems - gonzales(pag757 Homework 7...

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gonzales (pag757) – Homework 7 – Hoffmann – (56745) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points The emf of a battery is E = 19 V . When the battery delivers a current of 0 . 7 A to a load, the potential difference between the terminals of the battery is 17 V volts. Find the internal resistance of the battery. Answer in units of Ω. 002 10.0 points Four copper wires of equal length are con- nected in series. Their cross-sectional areas are 0 . 8 cm 2 , 2 . 5 cm 2 , 1 . 3 cm 2 , and 7 cm 2 . If a voltage of 142 V is applied to the ar- rangement, determine the voltage across the 2 . 5 cm 2 wire. Answer in units of V. 003 10.0 points Four resistors are connected as shown in the figure. 21 Ω 52 Ω 88 Ω 94 V 37 Ω S 1 a b c d Find the resistance between points a and b . Answer in units of Ω. 004 10.0 points Find the equivalent resistance of the circuit shown in the figure.

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Homework 7-problems - gonzales(pag757 Homework 7...

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