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100w bulb and 60w bulb connected in parallel to 220v which will glow brightly?
Wiki User
∙ 11y ago
Total supply voltage = 220v
rated power of first lamp= 100 watt
so current though it, I=p/v
I=100/220=.45 amps
Resistance offered by first lamp=220/.45= 488 ohms( i avoid fractions)
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rated power of second lamp=60 watts
voltage is same, so current through it = 60/220=.27 amps
resistance of second lamp = 220/.27=814 ohms( i avoid fractions)
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power drawn by first lamp =I12 R
=(.45)2 * 488 =98.82(=100)
power drawn by second lamp =I22 R
=(.27)2 * 814 =59(=60)
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SO 100 WATT BULB WILL GROW BRIGHTER AS IT HAS MORE POWER
Wiki User
∙ 11y ago
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