Join Sarthaks eConnect Today - Largest Online Education Community!
0 votes
asked in Physics by (15 points)
edited by

If n batches of m cells in series are connected in parallel with an external resistance R, then what is the expression for current I through R

1 Answer

+1 vote
answered by (9.6k points)

Circuit diagram

Each row of n cells connected in series  provides emf = nE . The equivalent resistance of each row is also nr. Hence for m rows (parallel connection) the net equivalent resistance becomes (nr)/m.

The emf across the external resistance R is nE.

Hence main current of the circuit


if r=0 then I =nE/R

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon