HARD
Earn 100

In a coal-fired power plant, which energy transformation occurs first?

50% studentsanswered this correctly

Important Questions on Work, Energy and Power

HARD
Which form of energy does a wound-up clock spring have?
EASY
Which of the following best describes potential energy?
MEDIUM

What is generated in a solar cell, when sunlight strikes the semiconductor material?

MEDIUM
Which energy transformation takes place in an electric bulb?
EASY
Which of the following is an example of chemical energy?
HARD
In an ideal pendulum, at what point is potential energy maximum?
MEDIUM
Which of the following energy transformation takes place in a photo cell?
HARD
What is the primary energy transformation in a solar panel?
MEDIUM

Which two methods are commonly used to convert solar energy into electrical energy?

MEDIUM
Which form of energy is stored in a stretched rubber band?
HARD
What is the primary energy transformation in a microphone?
HARD
What type of energy transformation occurs in a loudspeaker?
HARD
What type of energy transformation occurs in a hydropower plant?
MEDIUM

Which one of the following principles is used for directly generating an electric current using sunlight?

MEDIUM
Which of the following devices converts chemical energy to electrical energy?
EASY

The _____ energy stored in the wood gets converted into heat and light energies when it is burnt.

EASY
Which type of energy is produced by the movement of electric charges?
HARD
Which energy transformation occurs in photosynthesis?
EASY
What happens to the total mechanical energy in an ideal system?