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1. |
A 4 kW, 20 litre water heater is switched on for 10 minutes. The heat capacity Cp for water is 4 kJ/kg-K. Assuming all the electrical energy has gone into heating the water. The increase of the water temperature is |
A. | 15°C |
B. | 20°C |
C. | 26°C |
D. | 30°C |
Answer» E. | |