(C) To convert a galvanometer into an ammeter,a shunt resistance $S$ is connected in parallel with the galvanometer.Given:Galvanometer resistance $G =

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(C) To convert a galvanometer into an ammeter,a shunt resistance $S$ is connected in parallel with the galvanometer.Given:Galvanometer resistance $G = 100 \ \Omega$Full-scale deflection current $I_g = 1 \ mA = 10^{-3} \ A$Total current to be measured $I = 10 \ A$The formula for shunt resistance is $S = \frac{I_g G}{I - I_g}$.Substituting the values:$S = \frac{10^{-3} \times 100}{10 - 10^{-3}}$$S = \frac{0.1}{9.999}$$S \approx 0.01 \ \Omega$.

Class 12 Physics Moving Charges and Magnetism The Moving Coil Galvanometer (Sensitivity) and Ammeter and Voltmeter Conversion

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$A$ galvanometer having a coil resistance of $100 \ \Omega$ gives a full-scale deflection when a current of $1 \ mA$ is passed through it. The value of the shunt resistance,which can convert this galvanometer into an ammeter giving a full-scale deflection for a current of $10 \ A$,is: ...... $\Omega$

JEE MAIN 2016 All JEE MAIN

A
$0.1$
B
$3$
C
$0.01$
D
$2$

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Class 12

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Moving Charges and Magnetism

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The Moving Coil Galvanometer (Sensitivity) and Ammeter and Voltmeter Conversion

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JEE MAIN 2016 Paper All JEE MAIN years →

$A$ moving coil sensitive galvanometer shows a large deflection. To control its speed of deflection (damping),which of the following is used?

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$A$ voltmeter of $250 mV$ range having a resistance of $10 \Omega$ is converted into an ammeter of $250 mA$ range. The value of the necessary shunt is (nearly): (in $\Omega$)

EasyTS EAMCET 2015

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$A$ moving coil galvanometer of resistance $100 \Omega$ is used as an ammeter using a shunt resistance $0.1 \Omega$. The maximum deflection current in the galvanometer is $100 \mu A$. Find the total current in the circuit so that the ammeter shows maximum deflection. (in $mA$)

MediumTS EAMCET 2020

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$A$ galvanometer of resistance $50 \Omega$ is connected to a battery of $3 \text{ V}$ along with a resistance of $2950 \Omega$ in series,showing a full-scale deflection of $30$ divisions. The additional series resistance required to reduce the deflection to $20$ divisions is: (in $\Omega$)

EasyKCET 2017

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Assertion: To convert a galvanometer into an ammeter,a small resistance is connected in parallel with it.
Reason: The small resistance increases the combined resistance of the combination.

EasyAIIMS 2016

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$A$ moving coil sensitive galvanometer shows a large deflection. To control its speed of deflection (damping),which of the following is used?

$A$ voltmeter of $250 mV$ range having a resistance of $10 \Omega$ is converted into an ammeter of $250 mA$ range. The value of the necessary shunt is (nearly): (in $\Omega$)

$A$ moving coil galvanometer of resistance $100 \Omega$ is used as an ammeter using a shunt resistance $0.1 \Omega$. The maximum deflection current in the galvanometer is $100 \mu A$. Find the total current in the circuit so that the ammeter shows maximum deflection. (in $mA$)

$A$ galvanometer of resistance $50 \Omega$ is connected to a battery of $3 \text{ V}$ along with a resistance of $2950 \Omega$ in series,showing a full-scale deflection of $30$ divisions. The additional series resistance required to reduce the deflection to $20$ divisions is: (in $\Omega$)

Assertion: To convert a galvanometer into an ammeter,a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.

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Assertion: To convert a galvanometer into an ammeter,a small resistance is connected in parallel with it.
Reason: The small resistance increases the combined resistance of the combination.