018 part 1 of 4 100 points in the circuit shown below

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018 (part 1 of 4) 10.0 points In the circuit shown below, A , B , C , and D are identical light bulbs. Assume that the battery maintains a con- stant potential di ff erence between its termi- nals ( i.e. , the internal resistance of the battery is assumed to be negligible) and the resistance of each lightbulb remains constant. What is the correct relationship for the
brightnesses of (the power consumed by) the light bulbs?
Version 014 – QZ2 – ditmire – (58565) 10 1. P A > P B = P C > P D
019 (part 2 of 4) 10.0 points If the emf of the battery is 10 V and each resistance is 2 , what power is consumed by bulb B ? 1. 3.0 2. 5.33333 3. 1.69 4. 5.78 5. 4.5 6. 0.72 7. 3.61 8. 6.48 9. 0.5 10. 2.0 020 (part 3 of 4) 10.0 points Bulb D is then removed from its socket. How does the brightness of bulb A change? 1. The brightness of bulb A cannot be de- termined. 2. The brightness of bulb A decreases. cor- rect 3. The brightness of bulb A increases. 4. The brightness of bulb A remains the same.
Version 014 – QZ2 – ditmire – (58565) 11 Explanation: When bulb D is removed from its socket, the circuit becomes serial connection of bulb A , B , and C . R ABC = R A + R B + R C = 3 R , so I A = E 3 R < 3 E 5 R = I A , so the brightness of bulb A decreases. 021 (part 4 of 4) 10.0 points How does the brightness of bulb B change when bulb D is removed from its socket? 2. 23.2941 3. 30.0 4. 30.8571 5. 15.2381 6. 17.5 7. 17.2941 8. 51.4286 9. 40.625 10. 67.8462 4. The brightness of bulb B remains the same. 1. 31.3636 2. 23.2941 3. 30.0 4. 30.8571 5. 15.2381 6. 17.5 7. 17.2941 8. 51.4286 9. 40.625 10. 67.8462
In the figure below the battery has an emf
of 11 V and an internal resistance of 1 . Assume there is a steady current flowing in the circuit. 6 μ F 10 6 1 11 V Find the charge on the 6 μ F capacitor. Since R 2 and C are parallel, the potential di ff erence across each is the same, and the charge on the capacitor is Q = C V 2 = (6 μ F) (3 . 88235 V) = 23 . 2941 μ C . 023 (part 1 of 2) 10.0 points The circuit has been connected as shown in the figure for a long time. V = 14 V, R 1 = 2 , R 2 = 3 , R 3 = 8 , R 4 = 2 , and
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