Question

In hydroelectric power plant, more electrical power can be generated if water falls from a greater height because -

• A. its temperature increases.
• B. larger amount of potential energy is converted into kinetic energy of water.
• C. the electricity content of water increases with height.
• D. more water molecules dissociate into ions.

Answer 1

The correct option is B larger amount of potential energy is converted into kinetic energy of water.

If height is increased, potential energy stored in the water is also increased.

Therefore, a larger amount of potential energy is converted into kinetic energy of water.

Hence, option $\left(B\right)$ is the correct answer.