Moving Coil Galvanometer & Its Applications
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PHXII04:MOVING CHARGES AND MAGNETISM

362993 Best method to increase the sensitivity of the moving coil galvanometer is to decrease.

1 Radius of the coil
2 Number of turns of the coil
3 External magnetic field
4 Couple per unit twist
PHXII04:MOVING CHARGES AND MAGNETISM

362994 The relation between voltage sensitivity \(\sigma_{V}\) and the current sensitivity \(\sigma_{i}\) of a moving coil galvanometer is (Given that \(G\) is the resistance of the galvanometer)

1 \(\sigma_{V}=G \sigma_{i}\)
2 \(\sigma_{V}=\sigma_{i} / G\)
3 \(\sigma_{V} \sigma_{i}=G\)
4 \(\sigma_{V} \sigma_{i}=1 / G\)
PHXII04:MOVING CHARGES AND MAGNETISM

362995 A galvanometer of resistance \({G}\) is connected in a circuit. Now, a resistance \({R}\) is connected in series of galvanometer. To keep the main current in the circuit unchanged, the resistance to be put in parallel with the series combination of \({G}\) and \({R}\) is

1 \({\dfrac{G^{2}}{R}+G}\)
2 \({\dfrac{R^{2}}{G}+G}\)
3 \({\dfrac{G^{2}}{R}-G}\)
4 \({\dfrac{R^{2}}{G}-G}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362996 Read the Statement - A and Statement - B carefully to mark the correct options given below:
Statement A :
If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double
Statement B :
Increasing current sensitivity of a moving coil galvanometer by only increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362997 The restoring couple in the moving coil galvanometer is due to

1 Current in the coil
2 Magnetic field of the magnet
3 Material of the coil
4 Twist produced in the suspension wire
NEET DIGITAL LIBRARY
PHXII04:MOVING CHARGES AND MAGNETISM

362993 Best method to increase the sensitivity of the moving coil galvanometer is to decrease.

1 Radius of the coil
2 Number of turns of the coil
3 External magnetic field
4 Couple per unit twist
PHXII04:MOVING CHARGES AND MAGNETISM

362994 The relation between voltage sensitivity \(\sigma_{V}\) and the current sensitivity \(\sigma_{i}\) of a moving coil galvanometer is (Given that \(G\) is the resistance of the galvanometer)

1 \(\sigma_{V}=G \sigma_{i}\)
2 \(\sigma_{V}=\sigma_{i} / G\)
3 \(\sigma_{V} \sigma_{i}=G\)
4 \(\sigma_{V} \sigma_{i}=1 / G\)
PHXII04:MOVING CHARGES AND MAGNETISM

362995 A galvanometer of resistance \({G}\) is connected in a circuit. Now, a resistance \({R}\) is connected in series of galvanometer. To keep the main current in the circuit unchanged, the resistance to be put in parallel with the series combination of \({G}\) and \({R}\) is

1 \({\dfrac{G^{2}}{R}+G}\)
2 \({\dfrac{R^{2}}{G}+G}\)
3 \({\dfrac{G^{2}}{R}-G}\)
4 \({\dfrac{R^{2}}{G}-G}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362996 Read the Statement - A and Statement - B carefully to mark the correct options given below:
Statement A :
If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double
Statement B :
Increasing current sensitivity of a moving coil galvanometer by only increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362997 The restoring couple in the moving coil galvanometer is due to

1 Current in the coil
2 Magnetic field of the magnet
3 Material of the coil
4 Twist produced in the suspension wire
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PHXII04:MOVING CHARGES AND MAGNETISM

362993 Best method to increase the sensitivity of the moving coil galvanometer is to decrease.

1 Radius of the coil
2 Number of turns of the coil
3 External magnetic field
4 Couple per unit twist
PHXII04:MOVING CHARGES AND MAGNETISM

362994 The relation between voltage sensitivity \(\sigma_{V}\) and the current sensitivity \(\sigma_{i}\) of a moving coil galvanometer is (Given that \(G\) is the resistance of the galvanometer)

1 \(\sigma_{V}=G \sigma_{i}\)
2 \(\sigma_{V}=\sigma_{i} / G\)
3 \(\sigma_{V} \sigma_{i}=G\)
4 \(\sigma_{V} \sigma_{i}=1 / G\)
PHXII04:MOVING CHARGES AND MAGNETISM

362995 A galvanometer of resistance \({G}\) is connected in a circuit. Now, a resistance \({R}\) is connected in series of galvanometer. To keep the main current in the circuit unchanged, the resistance to be put in parallel with the series combination of \({G}\) and \({R}\) is

1 \({\dfrac{G^{2}}{R}+G}\)
2 \({\dfrac{R^{2}}{G}+G}\)
3 \({\dfrac{G^{2}}{R}-G}\)
4 \({\dfrac{R^{2}}{G}-G}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362996 Read the Statement - A and Statement - B carefully to mark the correct options given below:
Statement A :
If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double
Statement B :
Increasing current sensitivity of a moving coil galvanometer by only increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362997 The restoring couple in the moving coil galvanometer is due to

1 Current in the coil
2 Magnetic field of the magnet
3 Material of the coil
4 Twist produced in the suspension wire
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII04:MOVING CHARGES AND MAGNETISM

362993 Best method to increase the sensitivity of the moving coil galvanometer is to decrease.

1 Radius of the coil
2 Number of turns of the coil
3 External magnetic field
4 Couple per unit twist
PHXII04:MOVING CHARGES AND MAGNETISM

362994 The relation between voltage sensitivity \(\sigma_{V}\) and the current sensitivity \(\sigma_{i}\) of a moving coil galvanometer is (Given that \(G\) is the resistance of the galvanometer)

1 \(\sigma_{V}=G \sigma_{i}\)
2 \(\sigma_{V}=\sigma_{i} / G\)
3 \(\sigma_{V} \sigma_{i}=G\)
4 \(\sigma_{V} \sigma_{i}=1 / G\)
PHXII04:MOVING CHARGES AND MAGNETISM

362995 A galvanometer of resistance \({G}\) is connected in a circuit. Now, a resistance \({R}\) is connected in series of galvanometer. To keep the main current in the circuit unchanged, the resistance to be put in parallel with the series combination of \({G}\) and \({R}\) is

1 \({\dfrac{G^{2}}{R}+G}\)
2 \({\dfrac{R^{2}}{G}+G}\)
3 \({\dfrac{G^{2}}{R}-G}\)
4 \({\dfrac{R^{2}}{G}-G}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362996 Read the Statement - A and Statement - B carefully to mark the correct options given below:
Statement A :
If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double
Statement B :
Increasing current sensitivity of a moving coil galvanometer by only increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362997 The restoring couple in the moving coil galvanometer is due to

1 Current in the coil
2 Magnetic field of the magnet
3 Material of the coil
4 Twist produced in the suspension wire
NEET DIGITAL LIBRARY
PHXII04:MOVING CHARGES AND MAGNETISM

362993 Best method to increase the sensitivity of the moving coil galvanometer is to decrease.

1 Radius of the coil
2 Number of turns of the coil
3 External magnetic field
4 Couple per unit twist
PHXII04:MOVING CHARGES AND MAGNETISM

362994 The relation between voltage sensitivity \(\sigma_{V}\) and the current sensitivity \(\sigma_{i}\) of a moving coil galvanometer is (Given that \(G\) is the resistance of the galvanometer)

1 \(\sigma_{V}=G \sigma_{i}\)
2 \(\sigma_{V}=\sigma_{i} / G\)
3 \(\sigma_{V} \sigma_{i}=G\)
4 \(\sigma_{V} \sigma_{i}=1 / G\)
PHXII04:MOVING CHARGES AND MAGNETISM

362995 A galvanometer of resistance \({G}\) is connected in a circuit. Now, a resistance \({R}\) is connected in series of galvanometer. To keep the main current in the circuit unchanged, the resistance to be put in parallel with the series combination of \({G}\) and \({R}\) is

1 \({\dfrac{G^{2}}{R}+G}\)
2 \({\dfrac{R^{2}}{G}+G}\)
3 \({\dfrac{G^{2}}{R}-G}\)
4 \({\dfrac{R^{2}}{G}-G}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362996 Read the Statement - A and Statement - B carefully to mark the correct options given below:
Statement A :
If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double
Statement B :
Increasing current sensitivity of a moving coil galvanometer by only increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362997 The restoring couple in the moving coil galvanometer is due to

1 Current in the coil
2 Magnetic field of the magnet
3 Material of the coil
4 Twist produced in the suspension wire