An ice cream has a marked value of 700 kcal. How many kilowatt hour of energy will it deliver to the body as it is digested
An electrical appliance is rated 1500 W, 250 V. This appliance is connected to 250 V mains. The electrical energy consumed in 60 hours is:
The current through a 10 V tungsten filament lamp connected to a 10 V source of negligible resistance is 2 A. Calculate the electrical energy (in kWh) consumed in 5 hours.