Dimming the electrical lighting in a house is a simple way to reduce energy use. Setting dimmers at 50% of full light output saves about ____% of the energy required.
A) 20
B) 30
C) 40
D) 50

Question

Quizplus · Accepted Answer

Dimming the electrical lighting in a house is a simple way to reduce energy use. Setting dimmers at 50% of full light output saves about 40% of the energy required.

Dimming the Electrical Lighting in a House Is a Simple