An electric heater rated as (500 W and 200 V) raises the temperature of 1 kg water from `15^(@)C` to its boiling point in 15 min. the heat effeciency of the heater is

Heat needed to raise the temperature of 1 kg of water from 14.5^(@)C to 15.5^(@) C is ________ .

An electric heater of power 100 W raises the temperature of 5 kg of a liquid from 25^(@)C to 31^(@)C in 2 minutes. Calculate the specific heat of the liquid.

A electric kettle ( rated accurately at 2.5 kW ) is used to heat 3 kg of water from 15^(@)C to boiling point . It takes 9.5 min . Then the amount of heat that has been lost is

A electric kettle ( rated accurately at 2.5 kW ) is used to heat 3 kg of water from 15^(@)C to boiling point . It takes 9.5 min . Then the amount of heat that has been lost is

An electric heater is rated 1000 W - 200 V. Calculate the current flowing though it.

An electric heater of power 1000 W raises the temperature of 5 kg of a liquid from 25^@ C to 31^@ C in 2 minutes. Calculate : (i) the heat capacity, and (ii) the specific heat capacity of liquid.

How long does a 59 kw water heater take to raise the temperature of 150L of water from 21^(@)C to 38^(@)C (in min)

How long does a 59 kw water heater take to raise the temperature of 150L of water from 21^(@)C to 38^(@)C (in min)

An electric heater is rated 1000 W - 200 V. Calculate the resistance of the heating element.