Advertisements
Advertisements
Question
Define the term 'watt'.
Advertisements
Solution
Watt is the SI unit of power. One watt is the power of an appliance which works at the rate of 1 Joule per second.
APPEARS IN
RELATED QUESTIONS
Write true or false of the following statement.
Potential energy changes into kinetic energy when it is put to use
Write true or false of the following statement.
One form of energy cannot be converted into another form.
Fill in the blank
An electric fan converts electrical energy into ______ energy.
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
Give a reason for the following.
The efficiency of a machine is always less than 100%.
How many joules are there in one kilowatt-hour?
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
Can you tell?
What should be taken into account for measuring work?
We make useful objects from a variety of substances. Another use of substances is that we get energy from some of them.
There is a car. Its tank is full of fuel but it does not move. Why is that?
Find out the form of energy possessed by the following thing.
A rock on the top of a hill
