Question
Medium
Solving time: 3 mins
An ideal battery of and resistance are connected in series in the primary circuit of a potentiometer of length and resistance . The value of to give a potential difference of across of potentiometer wire is
(a)
(b)
(c)
(d)
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Text solutionVerified
Exp. (a)
Given, potential difference of is across 10 length of potentiometer wire. So potential drop per unit length is
Hence, potential drop across 1 m length of potentiometer wire is
Now, potential drop that must occurs across resistance is
Now, circuit current is
Hence, for resistance , using ,
we get
Given, potential difference of is across 10 length of potentiometer wire. So potential drop per unit length is
Hence, potential drop across 1 m length of potentiometer wire is
Now, potential drop that must occurs across resistance is
Now, circuit current is
Hence, for resistance , using ,
we get
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Question Text | An ideal battery of and resistance are connected in series in the primary circuit of a potentiometer of length and resistance . The value of to give a potential difference of across of potentiometer wire is (a) (b) (c) (d) |
Updated On | May 28, 2023 |
Topic | Current Electricity |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 6 |
Upvotes | 752 |
Avg. Video Duration | 4 min |