Question

If the average electrical power usage of an American home is 2 kW, then for how
many homes could electricity needs be met by one 2 MW wind turbine?

Answer 1

1,000 homes when it's spinning.

No homes when it's not spinning.

Answer 2

The number of homes that the wind turbine can carry is 1000 homes

Power is the ratio of work done by an object with respect to time. The unit of power is in Watts (W).

Given the average electrical power usage of an American home to be 2 kW

Since 1kW = 100W

Average power per American home = 2000W = 2 * 10³Watts

Average power of a turbine = 2MW = 2 * 10⁶Watts

Number of homes that the wind turbine can carry = $\dfrac{2 \times 10^6}{2 \times 10^3}$

Number of homes that the wind turbine can carry = $\dfrac{10^6}{10^3}$

This shows that the number of homes that the wind turbine can carry is 1000 homes

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