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प्रश्न
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
विकल्प
from electrical energy to heat energy
from electrical energy to light energy
from electrical energy to heat and light energy
from electrical energy to mechanical energy.
उत्तर
from electrical energy to heat and light energy
APPEARS IN
संबंधित प्रश्न
State the unit of energy and define it.
Define the term efficiency of a machine.
Answer the following in short.
What do you understand by the term efficiency of a machine’?
Give a reason for the following.
The efficiency of a machine is always less than 100%.
Name the commercial unit of measurement of energy.
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
If the energy of a ball falling from a height of 10 metres is reduced by 40%, how high will it rebound?
The capacity that an object has for doing work is called ______.
Which one of the following requires wind energy?
Which one of the following is not the unit of energy?
