" An electric kettle takes "3" A current at "220V" .The time taken by the kettle to boil "0.5kg" of water from temperature `50^(@)C` to `100^(@)C` is

An electric kettle takes 4 A current at 220 V . How much time will it take to boil 1 kg of wate from temperature 20^(@)C ? The temperature of boiling water is 100^(@)C

The heater coil of an elecric kettle is rated at 2000W,200V, How much time will in take is rasing the temperature of 1 litres of water from 20^(@)C to 100^(@)C . Assuming that only 80% of the total heat energy produced by the heater coil is used in raising the temperature of water. Density of water heater coil is used in raising the temperture of water. density of water = 1g cm^(-3) and specific heat of water = 1 "cal" g^(-1) .^(@)C^(-1) .

The heater coil of an elecric kettle is rated at 2000W,200V, How much time will in take is rasing the temperature of 1 litres of water from 20^(@)C to 100^(@)C . Assuming that only 80% of the total heat energy produced by the heater coil is used in raising the temperature of water. Density of water heater coil is used in raising the temperture of water. density of water = 1g cm^(-3) and specific heat of water = 1 "cal" g^(-1) .^(@)C^(-1) .

An electric kettle of 2000 Wis used to boil 20 litres of water. Find the time required to boil to the water from its initial temperature of 20^(@)C . (Take specific heat of water as 4200 J kg^(-1) K^(-1) . Density of water = 1000kg m^(-3) )

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) .

The heater coil of an electric kettle is rated as 2000W at 200V. How much time will it take to heat one litre of water from 20^(@)C to 100^(@)C assming that entire electric energy liberated form the heater coil is utilised for heating water? Also calculate the resistance of the coil. Density of water is 1g cm^(-3) .

The heater coil of an electric kettle is rated as 2000W at 200V. How much time will it take to heat one litre of water from 20^(@)C to 100^(@)C assming that entire electric energy liberated form the heater coil is utilised for heating water? Also calculate the resistance of the coil. Density of water is 1g cm^(-3) .

At higher altitudes , water boils at temperature lt 100^(@)C because :