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Problem 50 Hard Difficulty

Three 60.0-W, 120-V light- bulbs are connected across a 120-V power source, as shown in Figure P 18.50. Find (a) the total power delivered to the three bulbs and (b) the potential difference across each. Assume the resistance of each bulb is constant (even though, in reality, the resistance increases markedly with current).

Answer

a. P=40 W
b. V_{1}=79.2 V, V_{2}=40.8 V=V_{3}
c.$40 \mathrm{~V}$

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Video Transcript

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Top Physics 102 Electricity and Magnetism Educators
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University of Sheffield

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