Answered: Let’s apply what we know about circuits…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Let’s apply what we know about circuits to make a short string of Christmas tree lights.
Suppose you want to light up your Christmas tree with 3 bulbs. Determine a way to wire together three
light bulbs so that if any one of them goes out (breaks) the other two will remain lit. Assume that you
have available 1 battery, 3 light bulbs, and connecting wire.
(a) Make a circuit drawing for the circuit and provide a brief description.
(b) Assume that the filament in each light bulb has a resistance of 10 ohms when lit (i.e. hot). If you
power your string of lights with a 9 V source, how much power is dissipated by each light bulb (with all 3
bulbs working)?
Wired up in parallel, the equivalent resistance is 10/3 ohm. The total power dissipated is 24.3 W.

(I don't understand the explanation)

23.1
R=10 eechr
Rep
to
to
Req: r
P-エV。
(タリ
24.3 W
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