Part A Find the current through each bulb Express your answer using two signific

Question

Part A Find the current through each bulb Express your answer using two significant figures. Enter your answers numerically separated by a comma. Submit My Answers Give Up Incorrect; Try Again; 10 attempts remaining Part B Find the potential difference across each bulb Express your answer using two significant figures. Enter your answers numerically separated by a comma. Submit My Answers Give Up Incorrect; Try Again; 10 attempts remaining Part C Find the power delivered to each bulb Express your answer using two significant figures. Enter your answers numerically separated by a comma. Submit My Answers Give Up Part D Suppose one of the bulbs burns out, so that its filament breaks and current no longer flows through it. Find the power delivered to the remaining bulb. Express your answer using two significant figures. Submit My Answers Give Up Part E Does the remaining bulb glow more or less brightly after the other bulb bums out than before? more brightly less brightly Submit My Answers Give Up

Explanation / Answer

Rnet in series = R1+ R2 + r = 2+2 + 0.9 = 4.9 ohms

so

Current i = (E-V)/R = 8/4.9 = 1.632 Amps

as current remains same in series , i1 = i2 = 1.632 Amps

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V= iR

V across bulb1 = 1.632* 2= 3.26 Volts

V across bulb2 = 1.632* 2= 3.26 Volts

V across internal = 1.632* 0.9= 1.46 Volts

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Power P = V^2/R

POwer across Bulb 1 =P1 = 3.26^2/2 = 5.31 Watts

POwer across Bulb2 = P2 = 3.26^2/2 = 5.31 Watts

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Power P in rem bulb = V^2/R = 8*8/2 = 32 Watts

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