rizzasabrin rizzasabrin
  • 18-04-2022
  • Physics
contestada

a lamp for which converts 70 W out of every 20 W into thermal energy the lamp is being used for the sole purpose of the lighting room.
calculate the efficiency

Respuesta :

jsimpson11000 jsimpson11000
  • 18-04-2022

Answer:

71 % eff

Explanation:

if 50 out of 70  watt goes to making light

50/70 = 71 %

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