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61 - EASA Drone A2 License - Regarding power consumption, how does hovering 'In Ground Effect' (IGE) compare to hovering 'Out of Ground Effect' (OGE)?

Question 61 - Flight performance and planning - EASA Drone License A2

Hovering IGE requires less power and thrust due to the reduction of induced drag near the surface
Hovering IGE requires significantly more power because the air is denser
There is absolutely no difference in power consumption
Hovering OGE requires the motors to spin at half their normal speed

Training tests and timed exam simulations EASA Drone License A2