HW13 - and electric potentials are integer multiples oF one...

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Platt, David – Homework 13 – Due: Oct 7 2005, 4:00 am – Inst: Ken Shih 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. The due time is Central time. 001 (part 1 oF 4) 10 points Three small lamps are connected to a 12 V battery, as shown in the fgure. Assume the battery is ideal (has no internal resistance and given in the fgure) and the connecting wires have no resistance. Unlike most real bulbs, the resistances (given in the fgure) oF the bulbs do not vary. The switch S is closed. 12 V 5 . 5 Ω 1 . 4 Ω 1 . 6 Ω S a) What is the equivalent resistance oF this circuit? Answer in units oF Ω. 002 (part 2 oF 4) 10 points b) What is the total current oF this circuit? Answer in units oF A. 003 (part 3 oF 4) 10 points c) What is the current in the 1 . 4 Ω bulb? Answer in units oF A. 004 (part 4 oF 4) 10 points d) What is the potential di±erence across the 5 . 5 Ω bulb? Answer in units oF V. 005 (part 1 oF 1) 10 points Note: Making use oF the Fact that the resistors

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Unformatted text preview: and electric potentials are integer multiples oF one another may make the solution less tedious. 269V 3 k Ω 6 k Ω 538V 12 k Ω 9 a b c d e What is the current ²owing directly From “a” to “e”? Answer in units oF mA. 006 (part 1 oF 1) 10 points A network below consists oF with three bat-teries, each having an internal resistance, and fve resistors. 5 Ω 3 Ω 3 Ω 3 Ω 7 Ω 2 Ω 2 Ω 1 Ω 19 V 28 V 36 V a b ³ind the magnitude oF the potential di±er-ence between points a and b . Answer in units oF V. 007 (part 1 oF 2) 10 points In the circuit oF the fgure, the current I 1 is 1 . 7 A and the value oF E 2 is unknown. a b 28 V E 2 1 . 7 A 6 . 5 Ω I 2 1 . 6 Ω I 3 5 . 6 Ω What is the magnitude oF the current I 2 ? Answer in units oF A. 008 (part 2 oF 2) 10 points Platt, David – Homework 13 – Due: Oct 7 2005, 4:00 am – Inst: Ken Shih 2 Find I 3 . Answer in units of A....
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HW13 - and electric potentials are integer multiples oF one...

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