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Which uses more energy 250w TV set in 1 hour or a toster in 10 min |
| Answer» You doesn\'t give the power of the toaster. But I think it is the question of ncert. For TV set : P = 250 W = 250/1000 kW = 0.25 kWt = 1 hSo , E = P × t = 0.25 kW × 1 h = 0.25 kWhSimilarly we can find the energy used by the toaster. ( 0.20 kWh )On comparison we find that TV set uses more energy than toaster. | |