Calculate the energy needed by a 40 W halogen light bulb that operated for 24hr. Answer...

Question

Question

Calculate the energy needed by a 40 W halogen light bulb that operated for 24hr. Answer should be in Kilowatt hours. [1kwhr = 3.6x10^6 J] *

0.96kWh

9.6kWh

960kWh

90000kWh

science physics

Answer 1

Answer #1

Part A.

Energy consumed by bulb in one day will be:

E = Power rating*time period

E = 40 W*24 hr

E = 960 W-hr = 0.960*10^3 W-hr

E = 0.96 kWhr

So Correct option is A.

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Answer 2

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