The following formula can be used to compute the rate at which heat develops in the heater.
I2 R = P
We obtain by substituting the numbers in the equation.
P = (15A) 2 × 8 Ω = 1800 J/s
Heat is produced at a rate of 1800 J/s by the electric heater.
An electric heater of resistance 8 Ω draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater.
An electric heater of resistance 8 Ω draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater.