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Lightbulbs in series, I. The power rating of a lightbulb is the power it consumes when connected across a 120 $\mathrm{V}$ out-let. (a) If you put two 100 $\mathrm{W}$ bulbs in series across a 120 $\mathrm{V}$ outlet, how much power would each consume if its resistance were constant? (b) How much power does each one consume if you connect them in parallel across a 120 $\mathrm{V}$ outlet?

a. $$25 \mathrm{W}$$b. $$100 \mathrm{W}$$

Physics 102 Electricity and Magnetism

Chapter 19

Current, Resistance, and Direct-Current Circuit

Electric Charge and Electric Field

Gauss's Law

Electric Potential

Capacitance and Dielectrics

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Cornell University

Simon Fraser University

Hope College

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in this question we are considering about with power 100 what? At 1 20 volts of old age. We know that power is this clear by our which means the resistance of each world, his face scarred by P which is one for the squared by 100 which is 1 40 for home. Another. You know this if you have four. But if we have two bottles in Siri's, the total resistance becomes 2.88 I'm sorry if you have two bobs in serious across one for divorce because they're similar the world it gets split with each of them on DH. The whole day's difference between each of them is 60 world and the power becomes world eight square by our, which is 60 square by their assistance, which we found out this 1 44 this and so do we. 25. What? Or Bobby, If you have there in parallel, if you have there in parallel to board instruments constant hence the power along each of them is we square by our where we simply 1 20 world. And that's 1 40 square by 1 44 Which gives us again. I wondered what

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