Question

What equation links efficiency, total power input and useful power output?

Tick (✓) one box.
Efficiency =
Efficiency =
useful power output
total power input
total power input
useful power output
Efficiency= useful power output x total power input
The tiles are used to power LED lights in the pavement.
An LED light has a total power input of 4.0 W.
The efficiency of the LED light is 0.85
Calculate the useful power output of the LED light.

Answer 1

Answer: Efficiency = (useful power out) ÷ (total power in)

Step-by-step explanation: