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

its temperature increases

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larger amount of potential energy is converted into kinetic energy

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the electrical energy production decreases with increase in height of the water column

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more water molecules dissociate into ions

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Solution

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

In a hydroelectric power plant, more electrical power can be generated if water falls from a greater height because larger amount of potential energy is converted into kinetic energy. More is the kinetic energy, more is the speed of rotation of the turbine blades. This leads to higher production of electricity.

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Similar questions

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

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.

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

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.

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