(B) In a potentiometer,the balance point is reached when the potential difference $(p.d.)$ across the portion of the potentiometer wire between the po

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The $p.d.$ of the wire between the $+ve$ end and the jockey becomes equal to the $e.m.f.$ of the experimental cell.

(B) In a potentiometer,the balance point is reached when the potential difference $(p.d.)$ across the portion of the potentiometer wire between the positive terminal and the jockey is exactly equal to the $e.m.f.$ of the experimental cell being measured.At this point,the potential difference across the galvanometer becomes zero,resulting in no current flowing through the galvanometer branch,which is indicated by a null deflection.

Class 12 Physics Current Electricity Potentiometer

Easy

In a potentiometer,a balance point is obtained when:

A
The $e.m.f.$ of the battery becomes equal to the $e.m.f.$ of the experimental cell.
B
The $p.d.$ of the wire between the $+ve$ end and the jockey becomes equal to the $e.m.f.$ of the experimental cell.
C
The $p.d.$ of the wire between the $+ve$ point and the jockey becomes equal to the $e.m.f.$ of the battery.
D
The $p.d.$ across the potentiometer wire becomes equal to the $e.m.f.$ of the battery.

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Current Electricity

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Potentiometer

$A$ uniform conducting wire $AB$ of length $5 \, m$ and resistance $5 \, \Omega$ is connected as shown in the circuit. If the balancing point is obtained at $3 \, m$ from $A$, then the value of $E$ is. (in $ \, V$)

EasyTS EAMCET 2023

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In the given arrangement,$E_1 = 5 \, V$ and $E_2 = 7 \, V$. The balancing length is $6 \, m$. If the terminals of $E_2$ are reversed,then the new balancing length will be:

Medium

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$A$ potentiometer wire is $4 \text{ m}$ long and a potential difference of $3 \text{ V}$ is maintained between the ends. The e.m.f. of the cell which balances against a length of $100 \text{ cm}$ of the potentiometer wire is: (in $\text{ V}$)

DifficultMHT CET 2026

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To measure the internal resistance of a battery,a potentiometer is used. For $R = 10 \ \Omega$,the balance point is observed at $\ell = 500 \ cm$ and for $R = 1 \ \Omega$,the balance point is observed at $\ell = 400 \ cm$. The internal resistance of the battery is approximately: (in $\Omega$)

DifficultJEE MAIN 2024

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In the circuit shown, a four-wire potentiometer is made of a $400\, cm$ long wire, which extends between $A$ and $B$. The resistance per unit length of the potentiometer wire is $r = 0.01\, \Omega /cm$. If an ideal voltmeter is connected as shown with jockey $J$ at $50\, cm$ from end $A$, the expected reading of the voltmeter will be: ............... $V$

MediumJEE MAIN 2019

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In a potentiometer,a balance point is obtained when:

Similar Questions

$A$ uniform conducting wire $AB$ of length $5 \, m$ and resistance $5 \, \Omega$ is connected as shown in the circuit. If the balancing point is obtained at $3 \, m$ from $A$, then the value of $E$ is. (in $ \, V$)

In the given arrangement,$E_1 = 5 \, V$ and $E_2 = 7 \, V$. The balancing length is $6 \, m$. If the terminals of $E_2$ are reversed,then the new balancing length will be:

$A$ potentiometer wire is $4 \text{ m}$ long and a potential difference of $3 \text{ V}$ is maintained between the ends. The e.m.f. of the cell which balances against a length of $100 \text{ cm}$ of the potentiometer wire is: (in $\text{ V}$)

To measure the internal resistance of a battery,a potentiometer is used. For $R = 10 \ \Omega$,the balance point is observed at $\ell = 500 \ cm$ and for $R = 1 \ \Omega$,the balance point is observed at $\ell = 400 \ cm$. The internal resistance of the battery is approximately: (in $\Omega$)

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