Physics
Define a kilowatt hour. How is it related to joule?
Work, Energy & Power
ICSE 2020
53 Likes
Answer
One kilowatt hour is the electrical energy consumed by an electrical appliance of power 1 kilowatt when it is used for 1 hour.
1 kilowatt hour = 1 kilowatt x 1 hour
= 1000 J s-1 x 3600 s = 3.6 x 106 J
Answered By
36 Likes
Related Questions
Give one example of each when:
(i) Chemical energy changes into electrical energy.
(ii) Electrical energy changes into sound energy.
(i) Identify the class of the lever shown in the diagram below:
(ii) How is it possible to increase the M.A. of the above lever without increasing it's length?
(i) Define moment of force.
(ii) Write the relationship between the S.I. and C.G.S. unit of moment of force.
A satellite revolves around a planet in a circular orbit. What is the work done by the satellite at any instant? Give a reason.