An electric kettle is filled with `1.3 kg` of water at `20^(@)C`. The power of the heating coil of the kettle is 2.0 KW. After switching it on the water begins to boil in `220s` . If the kettle was kept on for a further interval of `Delta t` it was observed that only 200g water remained in the kettle and remaining water vaporized (the vapor is allowed to escape through a small vent). The specific latent heat of vaporization of water at `100^(@)C` (boiling point) is `L = 2.26 KJ//g`. Calculate the specific heat capacity of water and the interval `Delta t`. Assume that heat supplied by the heater is completely absorbed by the water.
The specific latent heat of vaporization of water is …………
The latent heat of vaporization of water is "….............." .
Find the amount of heat required to convert 10g of water at 100^(@)C into steam. (Spefic latent heat of vaporization of water = 540 cal //g )
An electric kettle of 1200W has 1 kg water at 20^@C . The water equivalent of the kettle is 500g . The time required to heat water from 20^(@) to 100^(@)C will be (specific heat of water = 4200 J//kg^(@)C) .
An electric kettle contains 1.5 kg of water of 100^(@)C and is poweredby a 2.0 kW electric element. If the thermostat of the kettle fails to operate, approximately how long will thekettle take to boil dry? (Take the specific latent heat of vaporisation of water as 2000kJ kg^(-1) )
An electric kettle has two coils. When one of these is switched on, the water in the kettle boils in 6 minutes. When the other coil is switched on, the water boils in 3 minutes. If the two coils are connected in series, find the time taken to boil the water in the kettle.
