Light Bulbs in Series and in Parallel Two light bulbs have resistances of 400 and 800 .

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Light Bulbs in Series and in Parallel Two light bulbs have resistances of 400 Ω and 800 Ω. If the two light bulbs are connected in series across a 120-V line, find
(a) The current through each bulb;
(b) The power dissipated in each bulb;
(c) The total power dissipated in both bulbs. The two light bulbs are now connected in parallel across the 120-V line. Find
(d) The current through each bulb;
(e) The power dissipated in each bulb;
(f) The total power dissipated in both bulbs.
(g) In each situation, which of the two bulbs glows the brightest?
(h) In which situation is there a greater total light output from both bulbs combined?
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Related Book For  book-img-for-question

Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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