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What will happen when a 40 watt, 220 volt lamp and 100 watt, 220 volt lamp are connected in series across a 40 volt supply?
  • a)
    100 watt lamp will fuse
  • b)
    40 watt lamp will fuse
  • c)
    Both lamps will fuse
  • d)
    Neither lamp will fuse
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
What will happen when a 40 watt, 220 volt lamp and 100 watt, 220 volt...
Maximum capacity of currents in 40 W
=
= 1.82A
Maximum capacity of current in 100 W
=
= 0.454A
Resistances of bulbs are
Now when they are joined in series with 400 volt.
Current
=
= 0.236
As current 0.236 A is more than max. capacity of 40 W bulb so, this bulb will fuse.
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What will happen when a 40 watt, 220 volt lamp and 100 watt, 220 volt lamp are connected in series across a 40 volt supply?a)100 watt lamp will fuseb)40 watt lamp will fusec)Both lamps will fused)Neither lamp will fuseCorrect answer is option 'B'. Can you explain this answer?
Question Description
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