Question:medium
Water of volume 2 liters in a container is heated with a coil of 1 kW at 27°C. The lid is open, and energy dissipates at a rate of 160 J/s. In how much time will the temperature rise from 27°C to 77°C?
(Given specific heat of water = 4.2 kJ/kgK)
Water of volume 2 liters in a container is heated with a coil of 1 kW at 27°C. The lid is open, and energy dissipates at a rate of 160 J/s. In how much time will the temperature rise from 27°C to 77°C?
(Given specific heat of water = 4.2 kJ/kgK)
Show Hint
Always subtract heat losses from input power.
Updated On: Mar 23, 2026
- 8 min 20 s
- 6 min 2 s
- 7 min
- 14 min
Show Solution
The Correct Option is A
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