In a dam, potential energy of water changes into ___________, which rotates the turbine.

Correct option is C

Correct Answer: (c) Kinetic energy

Explanation:

• Water stored in a dam has potential energy due to its height.
• When released, this potential energy converts into kinetic energy as water flows downward.
• The fast-moving water (kinetic energy) strikes the turbine blades and rotates them.

Information Booster:

• Hydropower plants work on the principle of conversion of potential → kinetic → mechanical → electrical energy.
• The turbine connected to a generator converts mechanical energy into electrical energy.
• Higher the height (head) of stored water, greater the available potential energy.
• Kinetic energy depends on the speed of flowing water.