A wind turbine is used to extract power from the wind.If the speed of the wind is doubled,the maximum power extracted from the wind will increase by a factor of
A)2
B)4
C)6
D)8
E)16

Question

Quizplus · Accepted Answer

The power extracted from the wind by a wind turbine is proportional to the cube of the wind speed. Therefore, if the wind speed doubles, the power extracted increases by a factor of $2^3 = 8$.

A Wind Turbine Is Used to Extract Power from the Wind.If