Electricity

[Jeyanthi R]

Incandescent lamps are available in different brightnesses such as 0 watts, 40 watts, 60 watts. It's the same wire; It's the same electricity. But, how do you get brightness in different sizes? How does the difference in brightness occuroccur within the same lamp? What is the mathematics behind this?l method?

 

[Deleted member 4993]

Incandescent lamps are available in different brightnesses such as 0 watts, 40 watts, 60 watts. It's the same wire; It's the same electricity. But, how do you get brightness in different sizes? How does the difference in brightness occuroccur within the same lamp? What is the mathematics behind this?l method?

Have you taken a course in high-school/university Physics?