Advertisements
Advertisements
प्रश्न
How is kilowatt hour related to joule?
Advertisements
उत्तर
1 kWh is the work done by a source of power 1 kW in 1 h, i.e.,
1 kWh = 1 kW × h = 1000 J s-1 × 3600 s = 3.6 × 106 J
1 Kilowatt hour = 3.6 × 106J
APPEARS IN
संबंधित प्रश्न
The work done by a fielder when he takes a catch in a cricket match, is negative. Explain.
State two factors on which power spent by a source depends. Explain your answer with examples.
Name the quality which is measured in kWh.
An ox can apply a maximum force of 1000 N. It is taking part in a cart race and is able to pull the cart at a constant speed of 30 ms-1 while making its best effort. Calculate the power developed by the ox.
What do you mean by equilibrium of a body?
The moment of a force 10 N about a point 0 is 4 Nm. Calculate the distance of point of application of force from the point 0.
Work done by a force is equal to the product of ....... and ....
In the following case write yes, if the work is being done and no if no work is being done.
A man moving on the rough ground.
What happens to the power if the time for doing work is reduced from t second to t/10 second?
A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg-1).
