Two lamps one rated 220v,50w and the other rated 220V,100W are connected in series with mains of 220V.Explain why does the 50W lamp consume more power
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Answered by
105
Given :
Two lamps one rated 220v,50w and the other rated 220V,100W
are connected in series with mains of 220V.
From equation, P=V²/R, ⇒R=V²/P
we can say the resistance of bulb is inversely proportional to power consumed.
So bulb with 50W has more resistance.
If two bulbs are connected in series connection then same current will flow through each lamp.
We know that
H=I²RT
Since the resistance of Bulb with 50w is more so it consumes more electrical energy and will glow more and bright.
Two lamps one rated 220v,50w and the other rated 220V,100W
are connected in series with mains of 220V.
From equation, P=V²/R, ⇒R=V²/P
we can say the resistance of bulb is inversely proportional to power consumed.
So bulb with 50W has more resistance.
If two bulbs are connected in series connection then same current will flow through each lamp.
We know that
H=I²RT
Since the resistance of Bulb with 50w is more so it consumes more electrical energy and will glow more and bright.
Answered by
5
Explanation:As 50W lamp consumes more power, therefore, it must be connected before the 100W bulb in series for it to receive the 220 voltage. After passing through it, its voltage will be reduced and it will be received by the 100W lamp, due to this reduce in voltage, the second lamp will have to consume less power. Therefore power consumed by 50W lamp will be greater.
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