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# which bulb has least resistance?100W, 200W, 500W or 1000W?

Arun
25763 Points
3 years ago
The resistance of an appliance is low when the power rating is high. Which implies, the resistance of the 1000 W bulb is least than any other given bulbs.
Khimraj
3007 Points
3 years ago
Power rating of bulb is given by P = V2/R.
For all bulb value of V will be same because they are connected to same potential difference.
So R $\propto$ 1/P.
So resistance of 1000W bulb will be least.