NEET Exam  >  NEET Questions  >  Twenty identical bulbs are connected in serie... Start Learning for Free
Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will be
  • a)
    the same in both the cases
  • b)
    more with 20 bulbs than with 18 bulbs
  • c)
    more with 18 bulbs than with 20 bulbs
  • d)
    unpredictable as the given data is not sufficient
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Twenty identical bulbs are connected in series across a 220 V supply. ...
V across each bulb increases
v equals IR but R is same in both cases so I increases
Free Test
Community Answer
Twenty identical bulbs are connected in series across a 220 V supply. ...
Explanation:

Scenario 1: 20 bulbs connected in series
- When 20 identical bulbs are connected in series across a 220 V supply, the voltage across each bulb will be 220 V / 20 = 11 V.
- If two bulbs burn out, the circuit will be broken, and no current will flow. Therefore, none of the bulbs will light up.

Scenario 2: 18 bulbs connected in series
- When the remaining 18 bulbs are connected again in series across the same 220 V supply, the voltage across each bulb will be 220 V / 18 ≈ 12.22 V.
- Since the voltage across each bulb is slightly higher in this scenario, the illumination of the 18 bulbs will be more compared to when all 20 bulbs were connected.
Therefore, the correct answer is option 'C' - more with 18 bulbs than with 20 bulbs.
Explore Courses for NEET exam

Top Courses for NEET

Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer?
Question Description
Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Twenty identical bulbs are connected in series across a 220 V supply. Two of the bulbs are found to bum out. The remaining 18 bulbs are connected again in series across the same supply. The illumination will bea)the same in both the casesb)more with 20 bulbs than with 18 bulbsc)more with 18 bulbs than with 20 bulbsd)unpredictable as the given data is not sufficientCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
Explore Courses for NEET exam

Top Courses for NEET

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev