Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 27 - Circuits - Problems - Page 802: 104a

Answer

At $100~W$, the current passes through the filament with the larger resistance At $200~W$, the current passes through the filament with the smaller resistance At $300~W$, the current passes through the filaments wired in parallel

Work Step by Step

We can write an expression for the power: $P = \frac{V^2}{R}$ At $100~W$, the current passes through the filament with the larger resistance At $200~W$, the current passes through the filament with the smaller resistance At $300~W$, the current passes through the filaments wired in parallel
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