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प्रश्न
Fill in the boxe to show the corresponding energy transformation.
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उत्तर
Mechanical energy ⇌ electrical energy
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संबंधित प्रश्न
Choose one or more correct alternatives.
Joule is the unit of ______.
- force
- work
- power
- energy
Write an expression for the work done against gravity.
A 100 W electric lamp emits energy in the form of light at the rate 10 J per second. What percentage of electric energy does the lamp transform into light energy?
Calculate the amount of work done by a child carrying a bag of 20 kg when he moves a distance of 40 m in
(a) Vertical direction, and
(b) Horizontal direction
Give an example
Electrical energy changes to heat energy.
How is horse power related to the S. I. unit of power?
A man climbs a slope and another walks same distance on level road. Which of the two expends more energy and why?
A force is applied on a body of mass 20 kg moving with a velocity of 40 ms−1. The body attains a velocity of 50 ms−1 in 2 seconds. Calculate the work done by the body.
If a ball is dropped on the sloping roof of a house, it acquires ______ and falls on the ground. That is the transformation of ______ energy into ______ energy takes place.
(kinetic, potential, motion)
One labourer carried four pans of road metal through a distance of 100 metres. If he carries two pans of road metal through a 200 metre distance ______ work will be done.
