Advertisements
Advertisements
Question
Which one of the following is not the unit of energy?
Options
joule
newton metre
kilowatt
kilowatt-hour
Advertisements
Solution
kilowatt
Explanation:
Kilowatt is the unit of power, not energy.
APPEARS IN
RELATED QUESTIONS
Write true or false of the following statement.
In an electric fan, electrical energy changes into the mechanical energy.
Match the following:
| Column A | Column B |
| (a) Needle | (1) class II lever |
| (b) Doorknob | (2) inclined plane |
| (c) Ramp | (3) Class I lever |
| (d) Lemon crusher | (4) Wheel and axle |
| (e) Seesaw | (5) wedge |
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
Answer the following in short.
What do you understand by the term efficiency of a machine’?
A cell converts one form of energy into another form. Name the two forms.
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
Can you tell?
When can we say that displacement has taken place?
Observe the picture and put a tick (✓) if work is done and put a cross (x) if work is not done.
 |
 |
 |
 |
 |
 |
The work done on an object does not depend upon the
Define kilowatt hour.
