Physics · Current Electricity
Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a potentiometer of length 400 cm.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1A potentiometer is usually used for comparing resistances and not voltages.
- 2The first portion of 50 cm of wire itself should have a potential drop of 10 V.
- 3The battery of the potentiometer can have a voltage of 15 V and R adjusted so that the potential drop across the wire slightly exceeds 10 V.✓
- 4The battery that runs the potentiometer should have a voltage of 8 V.
Correct answer
The battery of the potentiometer can have a voltage of 15 V and R adjusted so that the potential drop across the wire slightly exceeds 10 V.
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Physics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Current Electricity MCQs →Want more practice questions on Current Electricity?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Physics · Current Electricity