An electric bulb is rated at 220 V,100 watt.what is its resistance
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Power is square of potential difference divided by resistance.
use it and get resistance as follows
100 = (220×220)÷R
R = (220×220)÷100
R = 484 ohm.
use it and get resistance as follows
100 = (220×220)÷R
R = (220×220)÷100
R = 484 ohm.
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