A Cell Converts One Form of Energy into Another Form. Name the Two Forms.

A cell converts one form of energy into another form. Name the two forms.

एका वाक्यात उत्तर

A cell converts chemical energy (one form of energy) into electrical energy (another form).

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पाठ 4: Work and energy - Very Short Answers 2 [पृष्ठ १६२]

पाठ 4 Work and energy
Very Short Answers 2 | Q 12 | पृष्ठ १६२

Write true or false of the following statement.

In an electric fan, electrical energy changes into the mechanical energy.

Fill in the blank

The S.I.unit of energy is ______

State the unit of energy and define it.

State two factors on which the potential energy of a body at a certain height above the ground depends.

Match the following:

Define the term 'watt'.

Take two aluminium channels of different lengths.
Place the lower ends of the channels on the floor and hold their upper ends at the same height.
Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance.

At the moment of releasing the balls, which energy do the balls have?
As the balls roll down which energy is converted into which other form of energy?
Why do the balls cover the same distance on rolling down?
Note: The question is wrong. It should be "Why do the balls cover the same distance after rolling down"?
What is the form of the eventual total energy of the balls?
Which law related to energy does the above activity demonstrate? Explain.

Observe the picture and put a tick (✓) if work is done and put a cross (x) if work is not done.