Questions
50 electric bulbs are connected in series across a 220 V supply and the illumination produces is i1,. 5 bulbs are fused. If the remaining 45 are again connected in series, the illumination produces is i2. Which of the following is true ?
detailed solution
Correct option is B
The resistance of 45 bulbs will be less than the resistance of 50 bulbsi∝ heat produced =V2RtSo, in case of 45 bulbs, the illumination increases as r decreases.∴ i˙1Talk to our academic expert!
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