solution_pdf13

# solution_pdf13 - tovar(jdt436 homework 13 Turner(59070 This...

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tovar (jdt436) – homework 13 – Turner – (59070) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 oF 3) 10.0 points A total charge oF 2.6 mC passes through a cross-sectional area oF a nichrome wire in 3 s. a) What is the current in the wire? Correct answer: 0 . 000866667 A. Explanation: Let : Δ Q 1 = 2 . 6 mC and Δ t 1 = 3 s . I = Δ Q Δ t = 0 . 0026 C 3 s = 0 . 000866667 A . 002 (part 2 oF 3) 10.0 points b) How many electrons pass through the cross-sectional area in 26.0 s? Correct answer: 1 . 40833 × 10 17 . Explanation: Let : q e = 1 . 6 × 10 - 19 C and Δ t 2 = 26 . 0 s . Δ Q = N q e N = Δ Q q e = I Δ t 2 q e = (0 . 000866667 A)(26 s) 1 . 6 × 10 - 19 C = 1 . 40833 × 10 17 . 003 (part 3 oF 3) 10.0 points c) IF the number oF charges that pass through the cross-sectional area during the given time interval doubles, what is the resulting cur- rent? Correct answer: 0 . 00173333 A. Explanation: Let : Δ Q 2 = 2 Δ Q 1 . I = 2 Δ Q 1 Δ t 1 = 2 (0 . 0026 C) 3 s = 0 . 00173333 A . 004 (part 1 oF 2) 10.0 points The current in a conductor varies over time as shown in the fgure. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 Current(A) Time(s) How much charge passes through a cross section oF the conductor in the time interval t = 0 s to t = 5 s? Correct answer: 18 C.

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solution_pdf13 - tovar(jdt436 homework 13 Turner(59070 This...

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