CBSE Class 10 Answered
What is relation between brightness and resistance of element of bulb ?
Asked by pavantalwani | 15 Jul, 2010, 10:31: PM
Expert Answer
Dear student,
A low energy bulb has a much lower wattage because it uses less electricity. In general the light output from a low energy bulb is equivalent to a wattage 4-5 times higher in an incandescent bulb. This is effected by the size and shape of the low energy bulb.CFL( compact fluorascent light) is a low wattage lamp. CFL stands for 'compact fluorescent lighting' (just like those long strip-lights). The cleverly-folded glass tubes contain a gas, and are coated on the inside with a layer of phosphor. When electricity passes through the gas, it emits ultraviolet rays which cause the phosphor coating to glow. This is more energy efficient because most of the energy is turned into light instead of wasteful heat (which conventional bulbs produce a lot of heat).
Hope this helps.
Team
Topperlearning.com
Answered by | 16 Jul, 2010, 10:41: AM
Application Videos
Concept Videos
CBSE 10 - Physics
Asked by khajannirwan | 27 Feb, 2024, 10:20: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by saanviyadla | 24 Jan, 2024, 07:06: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by kamalaranjanmohantymohanty5 | 06 Jan, 2024, 10:05: AM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by nandhikasugumar | 05 Oct, 2023, 04:01: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by daniya062008 | 02 Oct, 2023, 08:25: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by prassanna.j | 03 Sep, 2023, 12:28: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by prassanna.j | 03 Sep, 2023, 12:21: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by prassanna.j | 03 Sep, 2023, 12:13: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by prassanna.j | 03 Sep, 2023, 12:11: PM
ANSWERED BY EXPERT