The greatest theoretical power $P$ for a wind turbine is described by the equation $P = k\rho A v^n$, in which $\rho$ represents the density of air, $A$ is the area swept out by the turbine blades, $v$ is the speed of the air and $k$ is a constant with no units. What is the value of $n$?
- A1
- B2
- C3
- D4