mm wrote:
Which uses more electricity, a 75 watt light bulb, or a 150 with a
dimmer so that it is only as bright as the 75?

If one uses more, does it use much more?

No matter how you dim it, the 75 will be more efficient or brighter if
you like. However the 150 watt will last a lot longer.

The hotter the lamp burns the more efficient it will be and the shorter
its life will be.

--
Joseph Meehan

Dia duit