Advertisements
Advertisements
Question
Write true or false of the following statement.
In an electric fan, electrical energy changes into the mechanical energy.
Options
True
False
Advertisements
Solution
True.
APPEARS IN
RELATED QUESTIONS
Match the following columns
| COLUMN A | COLUMN B |
| 1. Running water | 1. heat energy |
| 2. Burning | 2. vibrations |
| 3.Energy | 3.atom bomb |
| 4.Sound energy | 4.kinetic energy |
| 5.Nuclear energy | 5.joule |
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
Name the commercial unit of measurement of energy.
Name two units of power bigger than watt.
How many joules are there in one kilowatt-hour?
Name the quantity whose unit is :
(a) kilowatt
(b) kilowatt-hour
Can you tell?
When can we say that displacement has taken place?
When a body falls freely towards the earth, then its total energy
A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g = 10 m s–2)
Define kilowatt hour.
