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Two bulbs are having the ratings as 60 W...

Two bulbs are having the ratings as 60 W, 220 V and 40 W, 220 V respectively. Which one has a greater resistance?

Text Solution

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electric power `P=(V^(2))/(R )`
For the same value of V,R is inversely proportional to P.
Therefore, lesser the power, greater the resistance
Hence, the bulb with 40W, 220 V rating has a greater resistance.
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