06. Measuring Instrument (Meter Bridge, Galvanometer, Ammeter, Voltmeter, Potentiometer)
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Current Electricity

152786 A $72 \Omega$ galvanometer is shunted by a resistance of $8 \Omega$. The percentage of the total current which passes through the galvanometer is

1 $0.1 \%$
2 $10 \%$
3 $25 \%$
4 $0.25 \%$
JEE Main-27.06.2022
Current Electricity

152787 A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the observations for $\frac{1}{3}$ deflection in the galvanometer. Which of the below is true for measuring value of $G$ ?

1 $\frac{1}{3}$ deflection method cannot be used for determining the resistance of the galvanometer.
2 $\frac{1}{3}$ deflection method can be used and in this case the $\mathrm{G}$ equals to twice the value of shunt resistance(s).
3 $\frac{1}{3}$ deflection method can be used and in this case, the $G$ equals to three times the value of shunt resistance(s).
4 $\frac{1}{3}$ deflection method can be used and in this case the $G$ value equals to the shunt resistance(s).
JEE Main-25.06.2022
Current Electricity

152788 Match List-I with List-II.
| | List-I | | List-II |
| :--- | :--- | :--- | :--- |
| (A) | AC generator | (I) | Detects the \ltbr> presence of current \ltbr> in the circuit |
| (B) | Galvanometer | (II) | Converts \ltbr> mechanical energy \ltbr> into electrical \ltbr> energy |
| (C) | Transformer | (III) | Works on the \ltbr> principle of \ltbr> resonance in AC \ltbr> circuit |
| (D) | Metal detector | (IV) | Changes an \ltbr> alternating voltage \ltbr> for smaller or \ltbr> greater value |
Choose the correct answer from the options given below :

1 (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
2 (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
3 (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
4 (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
JEE Main-25.06.2022
Current Electricity

152789 If $n$ represents the actual number of deflections in a converted galvanometer of resistance $G$ and shunt resistance $S$. Then the total current $I$ when its figure of merit is $K$ will be :

1 $\frac{\mathrm{KS}}{(\mathrm{S}+\mathrm{G})}$
2 $\frac{(\mathrm{G}+\mathrm{S})}{\mathrm{nKS}}$
3 $\frac{\mathrm{nKS}}{(\mathrm{G}+\mathrm{S})}$
4 $\frac{\mathrm{nK}(\mathrm{G}+\mathrm{S})}{\mathrm{S}}$
JEE Main-25.06.2022
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Current Electricity

152786 A $72 \Omega$ galvanometer is shunted by a resistance of $8 \Omega$. The percentage of the total current which passes through the galvanometer is

1 $0.1 \%$
2 $10 \%$
3 $25 \%$
4 $0.25 \%$
JEE Main-27.06.2022
Current Electricity

152787 A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the observations for $\frac{1}{3}$ deflection in the galvanometer. Which of the below is true for measuring value of $G$ ?

1 $\frac{1}{3}$ deflection method cannot be used for determining the resistance of the galvanometer.
2 $\frac{1}{3}$ deflection method can be used and in this case the $\mathrm{G}$ equals to twice the value of shunt resistance(s).
3 $\frac{1}{3}$ deflection method can be used and in this case, the $G$ equals to three times the value of shunt resistance(s).
4 $\frac{1}{3}$ deflection method can be used and in this case the $G$ value equals to the shunt resistance(s).
JEE Main-25.06.2022
Current Electricity

152788 Match List-I with List-II.
| | List-I | | List-II |
| :--- | :--- | :--- | :--- |
| (A) | AC generator | (I) | Detects the \ltbr> presence of current \ltbr> in the circuit |
| (B) | Galvanometer | (II) | Converts \ltbr> mechanical energy \ltbr> into electrical \ltbr> energy |
| (C) | Transformer | (III) | Works on the \ltbr> principle of \ltbr> resonance in AC \ltbr> circuit |
| (D) | Metal detector | (IV) | Changes an \ltbr> alternating voltage \ltbr> for smaller or \ltbr> greater value |
Choose the correct answer from the options given below :

1 (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
2 (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
3 (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
4 (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
JEE Main-25.06.2022
Current Electricity

152789 If $n$ represents the actual number of deflections in a converted galvanometer of resistance $G$ and shunt resistance $S$. Then the total current $I$ when its figure of merit is $K$ will be :

1 $\frac{\mathrm{KS}}{(\mathrm{S}+\mathrm{G})}$
2 $\frac{(\mathrm{G}+\mathrm{S})}{\mathrm{nKS}}$
3 $\frac{\mathrm{nKS}}{(\mathrm{G}+\mathrm{S})}$
4 $\frac{\mathrm{nK}(\mathrm{G}+\mathrm{S})}{\mathrm{S}}$
JEE Main-25.06.2022
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Current Electricity

152786 A $72 \Omega$ galvanometer is shunted by a resistance of $8 \Omega$. The percentage of the total current which passes through the galvanometer is

1 $0.1 \%$
2 $10 \%$
3 $25 \%$
4 $0.25 \%$
JEE Main-27.06.2022
Current Electricity

152787 A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the observations for $\frac{1}{3}$ deflection in the galvanometer. Which of the below is true for measuring value of $G$ ?

1 $\frac{1}{3}$ deflection method cannot be used for determining the resistance of the galvanometer.
2 $\frac{1}{3}$ deflection method can be used and in this case the $\mathrm{G}$ equals to twice the value of shunt resistance(s).
3 $\frac{1}{3}$ deflection method can be used and in this case, the $G$ equals to three times the value of shunt resistance(s).
4 $\frac{1}{3}$ deflection method can be used and in this case the $G$ value equals to the shunt resistance(s).
JEE Main-25.06.2022
Current Electricity

152788 Match List-I with List-II.
| | List-I | | List-II |
| :--- | :--- | :--- | :--- |
| (A) | AC generator | (I) | Detects the \ltbr> presence of current \ltbr> in the circuit |
| (B) | Galvanometer | (II) | Converts \ltbr> mechanical energy \ltbr> into electrical \ltbr> energy |
| (C) | Transformer | (III) | Works on the \ltbr> principle of \ltbr> resonance in AC \ltbr> circuit |
| (D) | Metal detector | (IV) | Changes an \ltbr> alternating voltage \ltbr> for smaller or \ltbr> greater value |
Choose the correct answer from the options given below :

1 (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
2 (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
3 (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
4 (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
JEE Main-25.06.2022
Current Electricity

152789 If $n$ represents the actual number of deflections in a converted galvanometer of resistance $G$ and shunt resistance $S$. Then the total current $I$ when its figure of merit is $K$ will be :

1 $\frac{\mathrm{KS}}{(\mathrm{S}+\mathrm{G})}$
2 $\frac{(\mathrm{G}+\mathrm{S})}{\mathrm{nKS}}$
3 $\frac{\mathrm{nKS}}{(\mathrm{G}+\mathrm{S})}$
4 $\frac{\mathrm{nK}(\mathrm{G}+\mathrm{S})}{\mathrm{S}}$
JEE Main-25.06.2022
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Current Electricity

152786 A $72 \Omega$ galvanometer is shunted by a resistance of $8 \Omega$. The percentage of the total current which passes through the galvanometer is

1 $0.1 \%$
2 $10 \%$
3 $25 \%$
4 $0.25 \%$
JEE Main-27.06.2022
Current Electricity

152787 A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the observations for $\frac{1}{3}$ deflection in the galvanometer. Which of the below is true for measuring value of $G$ ?

1 $\frac{1}{3}$ deflection method cannot be used for determining the resistance of the galvanometer.
2 $\frac{1}{3}$ deflection method can be used and in this case the $\mathrm{G}$ equals to twice the value of shunt resistance(s).
3 $\frac{1}{3}$ deflection method can be used and in this case, the $G$ equals to three times the value of shunt resistance(s).
4 $\frac{1}{3}$ deflection method can be used and in this case the $G$ value equals to the shunt resistance(s).
JEE Main-25.06.2022
Current Electricity

152788 Match List-I with List-II.
| | List-I | | List-II |
| :--- | :--- | :--- | :--- |
| (A) | AC generator | (I) | Detects the \ltbr> presence of current \ltbr> in the circuit |
| (B) | Galvanometer | (II) | Converts \ltbr> mechanical energy \ltbr> into electrical \ltbr> energy |
| (C) | Transformer | (III) | Works on the \ltbr> principle of \ltbr> resonance in AC \ltbr> circuit |
| (D) | Metal detector | (IV) | Changes an \ltbr> alternating voltage \ltbr> for smaller or \ltbr> greater value |
Choose the correct answer from the options given below :

1 (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
2 (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
3 (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
4 (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
JEE Main-25.06.2022
Current Electricity

152789 If $n$ represents the actual number of deflections in a converted galvanometer of resistance $G$ and shunt resistance $S$. Then the total current $I$ when its figure of merit is $K$ will be :

1 $\frac{\mathrm{KS}}{(\mathrm{S}+\mathrm{G})}$
2 $\frac{(\mathrm{G}+\mathrm{S})}{\mathrm{nKS}}$
3 $\frac{\mathrm{nKS}}{(\mathrm{G}+\mathrm{S})}$
4 $\frac{\mathrm{nK}(\mathrm{G}+\mathrm{S})}{\mathrm{S}}$
JEE Main-25.06.2022
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