Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


BRIGHTNESS OF A BULB IS  directly  PROPORTIONAL TO voltage  AND inversely PROPORTIONAL TO its resistance.
0 0 0

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Brightness of a bulb is proportional to the electrical power P, dissipated by the filament in the bulb, in the form of heat/light/radiation. 

P = V² /  R 

Brightness is directly proportional to the square of voltage applied across the bulb.      It is inversely proportional to the resistance of the bulb.

1 5 1
click on thanks button above please
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts