What must be the efficiency of an electric kettle marked 500 W, 230 V, if it was found to bring 1 kg of water at 15 |
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a) |
79% |
b) |
81% |
c) |
72% |
d) |
69% |
What must be the efficiency of an electric kettle marked 500 W, 230 V, if it was found to bring 1 kg of water at 15 |
|||||||
a) |
79% |
b) |
81% |
c) |
72% |
d) |
69% |
(a) Heat produced Where,
Heat absorbed by water Efficiency |