1 Answer
Solution :-
Energy consumed by an electrical device will be obtained with the assistance of the expression for power,
P = T
Where,
Power rating of the device,
P = five hundred W = 0.50 power unit Time that the device runs,
T= ten h Work d consumed by the device thus, energy c × Time
= 0.50 × 10 = 5 kWh
Hence, the energy consumed by four equal rating devices in
10 h = 4 × 5 kWh = 20 kWh = 20 Units.
Answered by Shivani Kumari | 2 years agoRelated Questions
A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?
A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?
Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive
Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?
An electric heater is rated 1500 W. How much energy does it use in 10 hours?