ajarchiyeva ajarchiyeva

01-03-2021
Physics

contestada

The Sankey diagram shows the energy transfers in an LED light bulb.

(look at the attached photo)

The Sankey diagram shows the energy transfers in an LED light bulb look at the attached photo class=

Respuesta :

misky77 misky77

01-03-2021

Answer:

B)20%

Explanation:

only the 2j of energy is getting used out of 10j.all other 8j are wasted as heat.

therefore the efficiency=2/10*100=20

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