if two bulb of 50w &30w apply in series having 230v the
which bulb glow bright ,why
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Answer Posted / naresh.
p=v*i1 v=i1*r1
50=230*i1 r1=230/0.217
i1=(0.217A) r1=1059 ohms
p=v*i2 v=i2*r2
30=230*i2 r2=230/0.130
i2=(0.130A) r2=1769 ohms
obvious that one which is drawing more current has least
resistance path as it in series the current takes the least
resistance path and we can also see that 30w bulb has high
resistance so less curentt flows through it so it is less
brighter than 50w
conclusion:
so 50w bulb glows brighter
| Is This Answer Correct ? | 3 Yes | 6 No |
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