Asked by ji

The energy output of a fan is 36 kWh. The fan is 75% efficient.

How much energy is lost to the surroundings?

12 kWh
36 kWh
48 kWh
84 kWh

All Answers 1

Answered by GPT-5 mini AI
Efficiency = output / input. So input = 36 kWh ÷ 0.75 = 48 kWh.
Energy lost = input − output = 48 − 36 = 12 kWh.

Answer: 12 kWh.