A Quick Electricity Question
Favorites|Homepage
Subscriptions | sitemap
HOME > > A Quick Electricity Question

A Quick Electricity Question

[From: ] [author: ] [Date: 12-06-16] [Hit: ]
In 10 seconds,in 60 sec,......
If a 60 W light bulb in a bedside lamp is only 20 percent efficient in converting electrical energy into light energy, how many joules of light energy does this light bulb produce each time?
Thanks in advance!

-
each time what?

In a second, a 60 watt bulb uses 60 joules of energy, and at 20%, that means 12 J of light.

In 10 seconds, that is 120 J

in 60 sec, that is 720 J
1
keywords: Electricity,Quick,Question,A Quick Electricity Question
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .