In a hydroelectric power plant more electrical power can be generated if water falls from a greater height. Why?

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Solution

When water falls from a greater height larger amount of potential energy can be converted into kinetic energy.

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Q. Question 13
In a 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
(c) the electricity content of water increases with height
(d) more water molecules dissociate into ions

In a hydroelectric power plant, water falls at a rate of 1000 $\frac{k g}{s}$ from a height of 100m. Assuming that 50% of the energy of falling water is converted into electrical energy, calculate the power generated per second.

Assertion: The amount of electric power generated in hydroelectric power plant A is more than that of hydroelectric power plant B.
Reason: The potential energy possessed by the stored water is converted into electricity.

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