02. Moving Coil Galvanometer and Magnetic Device
Magnetism and Matter

154268 A galvanometer has a resistance of $30 \Omega$ and a current of $2.0 \mathrm{~mA}$ gives full scale deflection. How will you convert this galvanometer into a voltmeter of 0.2 volt range?

1 $700 \Omega$ resistance should be connected parallel to the galvanometer.
2 $70 \Omega$ resistance should be connected parallel to the galvanometer.
3 $700 \Omega$ resistance should be connected in series with the galvanometer.
4 $70 \Omega$ resistance should be used in series with the galvanometer.
Magnetism and Matter

154269 In an ammeter $0.2 \%$ of main current passes through the galvanometer. If resistance of galvanometer is $\mathbf{G}$, the resistance of ammeter will be

1 $\frac{1}{499} \mathrm{G}$
2 $\frac{499}{500} \mathrm{G}$
3 $\frac{1}{500} \mathrm{G}$
4 $\frac{500}{499} \mathrm{G}$
CBESE
Magnetism and Matter

154270 A millivoltmeter of $25 \mathrm{mV}$ range is to be converted into an ammeter of $25 \mathrm{~A}$ range. The value (in ohm) of necessary shunt will be

1 0.001
2 0.01
3 1
4 0.05
CBESE
Magnetism and Matter

154271 When 0.005 A current flows through a moving coil galvanometer it gives full scale deflection. It is converted into a voltmeter to read $5 \mathrm{~V}$, using an external resistance of $975 \Omega$. The resistance of the galvanometer in $\mathrm{ohm}$, is:

1 5
2 10
3 15
4 25
Magnetism and Matter

154272 In an experiment with vibration magnetometer the value of $\frac{4 \pi^{2} I}{T^{2}}$ for a short bar magnet is observed as $36 \times 10^{-4}$. In the experiment with deflection magnetometer with the same magnet, the value of $\left(\frac{4 \pi d^{3}}{2 \mu_{0}}\right)$ Tan $\theta$ is observed as $\frac{10^{8}}{36}$. The magnetic moment of the magnet used, is:

1 $50 \mathrm{Am}$
2 $100 \mathrm{Am}$
3 $200 \mathrm{Am}$
4 $1000 \mathrm{Am}$
Magnetism and Matter

154268 A galvanometer has a resistance of $30 \Omega$ and a current of $2.0 \mathrm{~mA}$ gives full scale deflection. How will you convert this galvanometer into a voltmeter of 0.2 volt range?

1 $700 \Omega$ resistance should be connected parallel to the galvanometer.
2 $70 \Omega$ resistance should be connected parallel to the galvanometer.
3 $700 \Omega$ resistance should be connected in series with the galvanometer.
4 $70 \Omega$ resistance should be used in series with the galvanometer.
Magnetism and Matter

154269 In an ammeter $0.2 \%$ of main current passes through the galvanometer. If resistance of galvanometer is $\mathbf{G}$, the resistance of ammeter will be

1 $\frac{1}{499} \mathrm{G}$
2 $\frac{499}{500} \mathrm{G}$
3 $\frac{1}{500} \mathrm{G}$
4 $\frac{500}{499} \mathrm{G}$
CBESE
Magnetism and Matter

154270 A millivoltmeter of $25 \mathrm{mV}$ range is to be converted into an ammeter of $25 \mathrm{~A}$ range. The value (in ohm) of necessary shunt will be

1 0.001
2 0.01
3 1
4 0.05
CBESE
Magnetism and Matter

154271 When 0.005 A current flows through a moving coil galvanometer it gives full scale deflection. It is converted into a voltmeter to read $5 \mathrm{~V}$, using an external resistance of $975 \Omega$. The resistance of the galvanometer in $\mathrm{ohm}$, is:

1 5
2 10
3 15
4 25
Magnetism and Matter

154272 In an experiment with vibration magnetometer the value of $\frac{4 \pi^{2} I}{T^{2}}$ for a short bar magnet is observed as $36 \times 10^{-4}$. In the experiment with deflection magnetometer with the same magnet, the value of $\left(\frac{4 \pi d^{3}}{2 \mu_{0}}\right)$ Tan $\theta$ is observed as $\frac{10^{8}}{36}$. The magnetic moment of the magnet used, is:

1 $50 \mathrm{Am}$
2 $100 \mathrm{Am}$
3 $200 \mathrm{Am}$
4 $1000 \mathrm{Am}$
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Magnetism and Matter

154268 A galvanometer has a resistance of $30 \Omega$ and a current of $2.0 \mathrm{~mA}$ gives full scale deflection. How will you convert this galvanometer into a voltmeter of 0.2 volt range?

1 $700 \Omega$ resistance should be connected parallel to the galvanometer.
2 $70 \Omega$ resistance should be connected parallel to the galvanometer.
3 $700 \Omega$ resistance should be connected in series with the galvanometer.
4 $70 \Omega$ resistance should be used in series with the galvanometer.
Magnetism and Matter

154269 In an ammeter $0.2 \%$ of main current passes through the galvanometer. If resistance of galvanometer is $\mathbf{G}$, the resistance of ammeter will be

1 $\frac{1}{499} \mathrm{G}$
2 $\frac{499}{500} \mathrm{G}$
3 $\frac{1}{500} \mathrm{G}$
4 $\frac{500}{499} \mathrm{G}$
CBESE
Magnetism and Matter

154270 A millivoltmeter of $25 \mathrm{mV}$ range is to be converted into an ammeter of $25 \mathrm{~A}$ range. The value (in ohm) of necessary shunt will be

1 0.001
2 0.01
3 1
4 0.05
CBESE
Magnetism and Matter

154271 When 0.005 A current flows through a moving coil galvanometer it gives full scale deflection. It is converted into a voltmeter to read $5 \mathrm{~V}$, using an external resistance of $975 \Omega$. The resistance of the galvanometer in $\mathrm{ohm}$, is:

1 5
2 10
3 15
4 25
Magnetism and Matter

154272 In an experiment with vibration magnetometer the value of $\frac{4 \pi^{2} I}{T^{2}}$ for a short bar magnet is observed as $36 \times 10^{-4}$. In the experiment with deflection magnetometer with the same magnet, the value of $\left(\frac{4 \pi d^{3}}{2 \mu_{0}}\right)$ Tan $\theta$ is observed as $\frac{10^{8}}{36}$. The magnetic moment of the magnet used, is:

1 $50 \mathrm{Am}$
2 $100 \mathrm{Am}$
3 $200 \mathrm{Am}$
4 $1000 \mathrm{Am}$
Magnetism and Matter

154268 A galvanometer has a resistance of $30 \Omega$ and a current of $2.0 \mathrm{~mA}$ gives full scale deflection. How will you convert this galvanometer into a voltmeter of 0.2 volt range?

1 $700 \Omega$ resistance should be connected parallel to the galvanometer.
2 $70 \Omega$ resistance should be connected parallel to the galvanometer.
3 $700 \Omega$ resistance should be connected in series with the galvanometer.
4 $70 \Omega$ resistance should be used in series with the galvanometer.
Magnetism and Matter

154269 In an ammeter $0.2 \%$ of main current passes through the galvanometer. If resistance of galvanometer is $\mathbf{G}$, the resistance of ammeter will be

1 $\frac{1}{499} \mathrm{G}$
2 $\frac{499}{500} \mathrm{G}$
3 $\frac{1}{500} \mathrm{G}$
4 $\frac{500}{499} \mathrm{G}$
CBESE
Magnetism and Matter

154270 A millivoltmeter of $25 \mathrm{mV}$ range is to be converted into an ammeter of $25 \mathrm{~A}$ range. The value (in ohm) of necessary shunt will be

1 0.001
2 0.01
3 1
4 0.05
CBESE
Magnetism and Matter

154271 When 0.005 A current flows through a moving coil galvanometer it gives full scale deflection. It is converted into a voltmeter to read $5 \mathrm{~V}$, using an external resistance of $975 \Omega$. The resistance of the galvanometer in $\mathrm{ohm}$, is:

1 5
2 10
3 15
4 25
Magnetism and Matter

154272 In an experiment with vibration magnetometer the value of $\frac{4 \pi^{2} I}{T^{2}}$ for a short bar magnet is observed as $36 \times 10^{-4}$. In the experiment with deflection magnetometer with the same magnet, the value of $\left(\frac{4 \pi d^{3}}{2 \mu_{0}}\right)$ Tan $\theta$ is observed as $\frac{10^{8}}{36}$. The magnetic moment of the magnet used, is:

1 $50 \mathrm{Am}$
2 $100 \mathrm{Am}$
3 $200 \mathrm{Am}$
4 $1000 \mathrm{Am}$
Magnetism and Matter

154268 A galvanometer has a resistance of $30 \Omega$ and a current of $2.0 \mathrm{~mA}$ gives full scale deflection. How will you convert this galvanometer into a voltmeter of 0.2 volt range?

1 $700 \Omega$ resistance should be connected parallel to the galvanometer.
2 $70 \Omega$ resistance should be connected parallel to the galvanometer.
3 $700 \Omega$ resistance should be connected in series with the galvanometer.
4 $70 \Omega$ resistance should be used in series with the galvanometer.
Magnetism and Matter

154269 In an ammeter $0.2 \%$ of main current passes through the galvanometer. If resistance of galvanometer is $\mathbf{G}$, the resistance of ammeter will be

1 $\frac{1}{499} \mathrm{G}$
2 $\frac{499}{500} \mathrm{G}$
3 $\frac{1}{500} \mathrm{G}$
4 $\frac{500}{499} \mathrm{G}$
CBESE
Magnetism and Matter

154270 A millivoltmeter of $25 \mathrm{mV}$ range is to be converted into an ammeter of $25 \mathrm{~A}$ range. The value (in ohm) of necessary shunt will be

1 0.001
2 0.01
3 1
4 0.05
CBESE
Magnetism and Matter

154271 When 0.005 A current flows through a moving coil galvanometer it gives full scale deflection. It is converted into a voltmeter to read $5 \mathrm{~V}$, using an external resistance of $975 \Omega$. The resistance of the galvanometer in $\mathrm{ohm}$, is:

1 5
2 10
3 15
4 25
Magnetism and Matter

154272 In an experiment with vibration magnetometer the value of $\frac{4 \pi^{2} I}{T^{2}}$ for a short bar magnet is observed as $36 \times 10^{-4}$. In the experiment with deflection magnetometer with the same magnet, the value of $\left(\frac{4 \pi d^{3}}{2 \mu_{0}}\right)$ Tan $\theta$ is observed as $\frac{10^{8}}{36}$. The magnetic moment of the magnet used, is:

1 $50 \mathrm{Am}$
2 $100 \mathrm{Am}$
3 $200 \mathrm{Am}$
4 $1000 \mathrm{Am}$