Two lamps of rating 60W – 220V and 110W – 220V are connected in series across a supply of 220V. which lamp will glow brighter?
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the resistance of the bulb is given by are equal to v2p show the resistance of 60 volt bulb is more than resistance of hundred volt bulb so 60 volt to 220 volt is higher brighter
Answered by
1
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The resistance of the bulb is given by R=V2/P. So the resistance of 60 W bulb is more than the resistance of 100 W bulb. When they are connected in series the current through both bulbs is same. Hence 60 W bulb will be more brighter because P = I2R.
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