Work and Energy...

The amount of work done (or, energy spent) by a source of power $$1kW$$ in $$1h$$ time is:

The S.I. unit of energy is

A fruit hanging from the top branch of a tree possesses

Which of the following is an example of zero work even when the body suffers a displacement from its initial position?

A crane pulls up a car of mass $$500kg$$ to a vertical height of $$4m$$. So, work done by the crane is:

Watt hour represents:

Unit used in selling electrical energy to consumer is:

Calculate the power of a source if it produces energy of $$250\ J$$ in $$10\ s$$.

Convert 1 kWh to SI unit of energy.

Energy consumed in our house has a unit of