Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • In a potentiometer arrangement, a cell of emf gives a balance point at <img alt="36 \mathrm{cm}" src="/latex-image/?36%

In a potentiometer arrangement, a cell of emf 1.20 \mathrm{~V} gives a balance point at 36 \mathrm{cm} length of wire. This cell is now replaced by another cell of emf 1.80 \mathrm{~V}. The difference in balancing length of potentiometer wire in above conditions will be__________ \mathrm{cm}.

Option: 1

18


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

For potentiometer,

\mathrm{ E=\phi l }

\mathrm{ \phi \rightarrow }potential gradient

\mathrm{ l \rightarrow }Balancing length

\mathrm{ \frac{E_1}{E_2}=\frac{l_1}{l_2} }

\mathrm{ \frac{1.2}{1.8}=\frac{36}{l_2} }

\mathrm{ l_2=\frac{36 \times 1.8}{1.2} }

\mathrm{ l_2=54 \mathrm{~cm} }
The difference in balancing length of potentiometer wire in above conditions will be \mathrm{l_2-l_1=18 \mathrm{~cm}}

Posted by

Irshad Anwar

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2025: Most important chapters for physics, chemistry, mathematics to score good marks
anam-khan

JEE Main 2025 session 2 dates clash with ISC, PSEB 12th exams; no impact on major science subjects
anam-khan

Delhi police EOW books FIITJEE for fraud; 192 complaints filed

Latest Question