Work and Energy Test

Result

Work and Energy Test - 11

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Weekly Quiz Competition

Question 1
1 / -0

A fan converts electrical energy into

A
kinetic energy

B
potential energy

C
chemical energy

D
gravitational energy

Solution

Electrical energy is used for rotating the blades of a fan. The rotation of the blades creates a fast movement of air. Hence, a fan converts electrical energy into kinetic energy of air.

The correct answer is A.

Why alternative B is wrong:

In a fan, electrical energy is not used for changing the shape or position of its blades. Hence, electrical energy is not converted into potential energy.

Why alternative C is wrong:

Electrical energy is not used for making any chemical changes in the fan. Hence, electrical energy is not converted into chemical energy.

Why alternative D is wrong:

Gravitational energy is the energy stored in a body because of the gravitational pull of Earth. A fan does not convert electrical energy into gravitational energy.