EASY
Earn 100

Define one kilowatt-hour.

Important Questions on Work, Energy and Power

HARD
A 100 W heater is used every day for 60min. If the heater is used for 30 days, then how much energy has it consumed?
EASY
What type of energy is in the firecracker?
EASY
Electron volt is the unit of
EASY
Which of the following is an example of stored energy?
EASY

Find out the form of energy possessed by charcoal.

EASY
The energy in food is measured in _____. (Fahrenheit/ calorie/ Celsius/ metre)
MEDIUM
Give a brief account of mass-energy equivalence. What is its significance in physics?
EASY
Which form of energy is in food?
EASY
Petroleum products have energy in the form of
MEDIUM
Explain the term calorie.
EASY

Find out the form of energy possessed by a battery.

EASY
Cotyledons are also called-
MEDIUM

In our daily life, we use different kinds of energy. We have to remember that we need to encourage the use of energy that is available in plenty in nature. The picture shown below is the substance that gives us energy. Write if the substance is available in plenty in nature or available in a limited amount in nature. Also mention the type of energy the substance gives us.

Question Image

EASY
In torch cell _____ energy is stored.