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Approximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour?​
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23 votes
23 votes
Approximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour?​

User Ddutra
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1 Answer

7 votes
7 votes

Answer:

18,000 j

Step-by-step explanation:

the lightbulb dissipates 5W of power

P = ΔE / Δt

rearrange to solve for energy

ΔE = PΔt

P = 5W

t = 1 hour = 60 minutes = 3600 seconds

ΔE = 5 * 3600

ΔE = 18000 J

User Hamish Carpenter
by
2.7k points
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