The dams for generating ____ electricity can be built only in the hilly areas or at the foothill because water has to fall from a considerable height to generate electricity.

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Detailed Solution

The dams for generating Hydro electricity can be built only in the hilly areas or at the foothill because water has to fall from a considerable height to generate electricity.
Conversion of hydro potential energy into electricity is done by dams which obstruct the flow of water to collect it at a suitable height. The stored water has a lot of potential energy. The water from a suitable height is allowed to fall on the blades of the turbine located at the bottom of the dam through a pipe. The kinetic energy of the flowing water rotates the turbine rapidly. The rotation of the turbine helps the armature coil of the generator to rotate rapidly in the magnetic field. Thus, hydroelectricity is generated.

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