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May 17, 2020   photos  

In series connected lamps , the low power lamp will always glow brightly. Because the same current flows through the two lamps, the higher power is deposited on the larger electrical resistance, in this case on the 60 watts lamp. Finally, Low filament resistance more glow i mean 60w more glow but more chance of burnout campers to 100w. 60W bulb glow brighter than 100W. It's become 23.3W for 60W lamp and 14W for 100W lamp. 60W Here is connection in series bcs of that voltage drop occur 60W bulb glow brighter than 100 W.