Chapter 26 Solutions

Chapter 26 Solutions - wright(daw2557 Chapter 26 de(14443...

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wright (daw2557) – Chapter 26 – de – (14443) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points A typical color television draws about 2 . 8 A when connected to a 102 V source. What is the e±ective resistance oF the T.V. set? Correct answer: 36 . 4286 Ω. Explanation: Let : I = 2 . 8 A and V = 102 V . The resistance is R = V I = 102 V 2 . 8 A = 36 . 4286 Ω . 002 10.0 points A conductor with cross-sectional area 4 cm 2 carries a current oF 15 A. IF the concentration oF Free electrons in the conductor is 8 × 10 28 electrons / m 3 , what is the driFt velocity oF the electrons? Correct answer: 0 . 00292571 mm / s. Explanation: Let : I = 15 A , n = 8 × 10 28 electrons / m 3 , q e = 1 . 60218 × 10 - 19 C , and A = 4 cm 2 = 0 . 0004 m 2 . The current in a conductor is given by I = n q v d A , where n is the number oF charge carriers per unit volume, q is the charge per carrier, v d is the driFt velocity oF the carriers and A is the cross section oF the conduction.
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Chapter 26 Solutions - wright(daw2557 Chapter 26 de(14443...

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