Physics, 05.12.2021 15:30, steffweikeloyrt00

A 40W lamp wastes 34 J of energy every second by heating its surroundings. What is the efficiency of the lamp?
С
18%
D
85%
A
0.15%
15%
B

Answers: 3

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A 40W lamp wastes 34 J of energy every second by heating its surroundings. What is the efficiency...