a bulb of 100W and anather bulb of 200W , rated supply
voltage 230v.when supply voltage is reduced to 100v,which
bulb will give more light? and why with calculation?
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Answer Posted / pillay
If the illuminating efficiency of the filament is directly propotional to the current flow than I belive the answers that say the 200 watt bulb will glow brighter than the 100 watt bulb at 100 volts
| Is This Answer Correct ? | 8 Yes | 4 No |
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