JEE Exam > JEE Questions > Two cells with the same e.m.f E and different...
Start Learning for Free
Two cells with the same e.m.f 'E' and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero is
- a)√r1r2
- b)r1 + r2
- c)r1 - r2
- d)r1 + r2/2
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Two cells with the same e.m.f E and different internal resistances r1 ...
R = (r1 + r2)
b) R = E/(r1 + r2)
c) R = (r1 - r2)
d) R = E/(r1 - r2)
The correct answer is b) R = E/(r1 + r2).
Explanation:
When two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R, the total resistance in the circuit is R + r1 + r2. The current flowing through the circuit is given by:
I = E / (R + r1 + r2)
The potential difference across the first cell is given by:
V1 = E - I r1
For the potential difference across the first cell to be zero, we have:
E - I r1 = 0
Substituting the value of I, we get:
E - (E / (R + r1 + r2)) r1 = 0
Solving for R, we get:
R = E / ((r1 + r2))
Therefore, the value of R so that the potential difference across the first cell be zero is b) R = E/(r1 + r2).
b) R = E/(r1 + r2)
c) R = (r1 - r2)
d) R = E/(r1 - r2)
The correct answer is b) R = E/(r1 + r2).
Explanation:
When two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R, the total resistance in the circuit is R + r1 + r2. The current flowing through the circuit is given by:
I = E / (R + r1 + r2)
The potential difference across the first cell is given by:
V1 = E - I r1
For the potential difference across the first cell to be zero, we have:
E - I r1 = 0
Substituting the value of I, we get:
E - (E / (R + r1 + r2)) r1 = 0
Solving for R, we get:
R = E / ((r1 + r2))
Therefore, the value of R so that the potential difference across the first cell be zero is b) R = E/(r1 + r2).
Attention JEE Students!
To make sure you are not studying endlessly, EduRev has designed JEE study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in JEE.
|
Explore Courses for JEE exam
|
|
Similar JEE Doubts
Top Courses for JEEView all
Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer?
Question Description
Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer?.
Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer?.
Solutions for Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Two cells with the same e.m.f E and different internal resistances r1 and r2 are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero isa)√r1r2b)r1+ r2c)r1- r2d)r1+ r2/2Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup