Hydro-power plant captures the energy of falling water to produce electricity.
Hydroelectric power is produced as follows:
Water from the reservoir are channelized into tunnel where they turn the turbine or rotates the turbine with high power.
Turbine is further connected to the generator. The rotating of turbines enables the production of current via generator.
The produced current or electric power is then sent to the transformer which further distributes the power into various electrical lines according to demand.
Hence the correct answer is option:'river water stored in a reservoir flows down a channel in a dam, turning a turbine as it passes. the turbine is connected to a generator that produces electricity, and then the water continues downstream'.