The energy consumed when 5 W power is dissipated for 2 hrs is equal to __ kJ.
20
36
48
56
Given: Power=5 W Time=2 hrs=2×3600 s=7200 s We know that, Power = Energy dissipatedTime
Energy dissipated = Power×Time=5 W×7200 s=36000 J=36 kJ
The energy consumed when 5 kW power is dissipated for 2 hrs is equal to __ kJ.
When a 0.5 kW heater operates for 20 minutes, the electrical energy consumed is equal to ___kJ.
Find the energy in kWh consumed in 10 hrs by a machine of power 500W.
A bulb of power 40 W is used for 12.5 hrs each day for 30 days. Calculate the electrical energy consumed.