River water held behind a dam is a form of a) potential energy
The water behind a dam stores gravitational potential energy since the dam is in a level (position) that is higher than the water on the other side of the dam.
When the water falls down through the dam the potential energy is transformed in kinetic energy and it is used to turn a turbine.
What is potential energy?
It is the energy that an electric charge possesses in reference to another existing electric charge, separated by a distance. Its unit of measurement in the international system is the Joule.
Learn more about potential energy at brainly.com/question/13584911
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