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What do wind turbines, hydroelectric dams, and ethanol plants have in common?

AAll produce electrical current with pollution
BAll use generators to produce electrical current
CAll convert gravitational potential energy to electrical current
DAll convert thermal energy to electrical current

Verified Answer :

syed514

option b is right that is  All use generators to produce electrical current

Answer: B. All use generators to produce electrical current.

 

Explanation:

The wind, water and ethanol all are the examples of renewable sources of energy. These can be used to generate electricity. The kinetic energy of the blowing wind, free flowing water and liquid like ethanol can be used to generate mechanical energy in the turbine which can help in generating the electricity in the generator.

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