(C) Given:Resistance of the galvanometer,$G = 100 \ \Omega$.Full-scale deflection current of the galvanometer,$I_g = 100 \ \mu A = 100 \times 10^{-6}

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(C) Given:Resistance of the galvanometer,$G = 100 \ \Omega$.Full-scale deflection current of the galvanometer,$I_g = 100 \ \mu A = 100 \times 10^{-6} \ A = 0.1 \times 10^{-3} \ A$.Total current to be measured,$I = 1 \ mA = 1 \times 10^{-3} \ A$.To convert a galvanometer into an ammeter,a shunt resistance $S$ is connected in parallel with the galvanometer.The formula for shunt resistance is:$S = \frac{I_g G}{I - I_g}$Substituting the values:$S = \frac{0.1 \times 10^{-3} \times 100}{1 \times 10^{-3} - 0.1 \times 10^{-3}}$$S = \frac{0.1 \times 10^{-1}}{0.9 \times 10^{-3}}$$S = \frac{10^{-2}}{0.9 \times 10^{-3}} = \frac{10}{0.9} = \frac{100}{9} \ \Omega$.

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

Difficult

$A$ moving coil galvanometer of resistance $100 \ \Omega$ shows full-scale deflection when a current of $100 \ \mu A$ passes through it. If it is intended to show full-scale deflection when a current of $1 \ mA$ passes through it,the value of shunt resistance in ohms to be connected to the galvanometer is:

TS EAMCET 2002 All TS EAMCET

AP EAMCET 2002 All AP EAMCET

A
$\frac{9}{4}$
B
$\frac{10}{3}$
C
$\frac{100}{9}$
D
$\frac{900}{7}$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Physics Questions

Chapter

Moving Charges and Magnetism

Subtopic

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

Previous Year

TS EAMCET 2002 Paper All TS EAMCET years →

Previous Year

AP EAMCET 2002 Paper All AP EAMCET years →

The ratios of the voltage sensitivities,resistances and areas of the coils of two moving coil galvanometers $A$ and $B$ are $4:3$,$3:4$ and $1:2$ respectively. If the number of turns of the coil of galvanometer $A$ is $200$,then the number of turns of the coil of galvanometer $B$ is (All other quantities remain same in both the cases)

MediumTS EAMCET 2025

View Solution

When a resistance of $100 \Omega$ is connected in series with a galvanometer of resistance $R$,its range is $V$. To double its range,a resistance of $1000 \Omega$ is connected in series. Find $R$. (in $\Omega$)

MediumMHT CET 2010

View Solution

The resistance of a galvanometer is $50\,\Omega$ and it requires $2\,\mu A$ per two division deflection. The value of the shunt required in order to convert this galvanometer into an ammeter of range $5\,A$ is (The number of divisions on the galvanometer scale on one side is $30$).

Medium

View Solution

An ammeter of $5\,\Omega$ resistance can read $5\,mA$. If it is to be used to read $100\,V$,how much resistance is to be connected in series? (in $\Omega$)

Easy

View Solution

$A$ moving coil galvanometer is converted into an ammeter, reading up to $0.04 \,A$ by connecting a shunt of resistance '$3r$' across it and then into an ammeter reading up to $0.8 \,A$, when a shunt of resistance '$r$' is connected across it. What is the maximum current which can be sent through this galvanometer if no shunt is used (in $\,A$)?

DifficultMHT CET 2021

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Similar Questions

When a resistance of $100 \Omega$ is connected in series with a galvanometer of resistance $R$,its range is $V$. To double its range,a resistance of $1000 \Omega$ is connected in series. Find $R$. (in $\Omega$)

The resistance of a galvanometer is $50\,\Omega$ and it requires $2\,\mu A$ per two division deflection. The value of the shunt required in order to convert this galvanometer into an ammeter of range $5\,A$ is (The number of divisions on the galvanometer scale on one side is $30$).

An ammeter of $5\,\Omega$ resistance can read $5\,mA$. If it is to be used to read $100\,V$,how much resistance is to be connected in series? (in $\Omega$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module