Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
24.0k views
in Physics by (38.8k points)

Two cells of emf’s approximately 5V and 10V are to be accurately compared using a potentiometer of length 400cm. 

(a) The battery that runs the potentiometer should have voltage of 8V. 

(b) The battery of potentiometer can have a voltage of 15V and R adjusted so that the potential drop across the wire slightly exceeds 10V. 

(c) The first portion of 50 cm of wire itself should have a potential drop of 10V. 

(d) Potentiometer is usually used for comparing resistances and not voltages.

1 Answer

0 votes
by (63.8k points)
selected by
 
Best answer

(b) The battery of potentiometer can have a voltage of 15V and R adjusted so that the potential drop across the wire slightly exceeds 10V. 

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.

Categories

...