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

152870 Two resistance prepared from the wire of same material having diameter in the ratio $2: 1$ and lengths in the ratio $2: 1$ are connected in the left gap and right gap of Wheatstone's meter bridge respectively. The distance of the null point from left end of wire is

1 $66.7 \mathrm{~cm}$
2 $33.3 \mathrm{~cm}$
3 $25 \mathrm{~cm}$
4 $50 \mathrm{~cm}$
Current Electricity

152871 When an unknown resistance ' $X$ ' is connected in the left gap of a meter bridge and a known resistance ' $R$ ' in the right gap, null point is obtained at $40 \mathrm{~cm}$ from left end. If a $2 \Omega$ resistance is connected in series with ' $X$ ' the null point shifts towards right by $10 \mathrm{~cm}$, with same resistance in right gap. The value of ' $X$ ' must be

1 $4 \Omega$
2 $2 \Omega$
3 $3 \Omega$
4 $1 \Omega$
Current Electricity

152872 To determine the internal resistance of a cell by using potentiometer, the null point is at $1 \mathrm{~m}$ when cell is shunted by $3 \Omega$ resistance and at a length $1.5 \mathrm{~m}$ when cell is shunted by $6 \Omega$ resistance. The internal resistance of the cell is

1 $6 \Omega$
2 $4 \Omega$
3 $2 \Omega$
4 $3 \Omega$
Current Electricity

152873 In a metre bridge experiment, the resistance in the left gap is $20 \Omega$ and in right gap is $60 \Omega$. The bridge is balanced. The distance of the null point from the centre of the wire is

1 $16 \mathrm{~cm}$
2 $20 \mathrm{~cm}$
3 $12 \mathrm{~cm}$
4 $25 \mathrm{~cm}$
Current Electricity

152874 The resistance in left and right gap of a meterbridge are $3 \Omega$ and $5 \Omega$ respectively. When the resistance in the left gap is increased by $10 \%$, the balance point shifts nearly by

1 $4.4 \mathrm{~cm}$ to the left
2 $2.2 \mathrm{~cm}$ to the right
3 $2.2 \mathrm{~cm}$ to the left
4 $4.4 \mathrm{~cm}$ to the right
Current Electricity

152870 Two resistance prepared from the wire of same material having diameter in the ratio $2: 1$ and lengths in the ratio $2: 1$ are connected in the left gap and right gap of Wheatstone's meter bridge respectively. The distance of the null point from left end of wire is

1 $66.7 \mathrm{~cm}$
2 $33.3 \mathrm{~cm}$
3 $25 \mathrm{~cm}$
4 $50 \mathrm{~cm}$
Current Electricity

152871 When an unknown resistance ' $X$ ' is connected in the left gap of a meter bridge and a known resistance ' $R$ ' in the right gap, null point is obtained at $40 \mathrm{~cm}$ from left end. If a $2 \Omega$ resistance is connected in series with ' $X$ ' the null point shifts towards right by $10 \mathrm{~cm}$, with same resistance in right gap. The value of ' $X$ ' must be

1 $4 \Omega$
2 $2 \Omega$
3 $3 \Omega$
4 $1 \Omega$
Current Electricity

152872 To determine the internal resistance of a cell by using potentiometer, the null point is at $1 \mathrm{~m}$ when cell is shunted by $3 \Omega$ resistance and at a length $1.5 \mathrm{~m}$ when cell is shunted by $6 \Omega$ resistance. The internal resistance of the cell is

1 $6 \Omega$
2 $4 \Omega$
3 $2 \Omega$
4 $3 \Omega$
Current Electricity

152873 In a metre bridge experiment, the resistance in the left gap is $20 \Omega$ and in right gap is $60 \Omega$. The bridge is balanced. The distance of the null point from the centre of the wire is

1 $16 \mathrm{~cm}$
2 $20 \mathrm{~cm}$
3 $12 \mathrm{~cm}$
4 $25 \mathrm{~cm}$
Current Electricity

152874 The resistance in left and right gap of a meterbridge are $3 \Omega$ and $5 \Omega$ respectively. When the resistance in the left gap is increased by $10 \%$, the balance point shifts nearly by

1 $4.4 \mathrm{~cm}$ to the left
2 $2.2 \mathrm{~cm}$ to the right
3 $2.2 \mathrm{~cm}$ to the left
4 $4.4 \mathrm{~cm}$ to the right
Current Electricity

152870 Two resistance prepared from the wire of same material having diameter in the ratio $2: 1$ and lengths in the ratio $2: 1$ are connected in the left gap and right gap of Wheatstone's meter bridge respectively. The distance of the null point from left end of wire is

1 $66.7 \mathrm{~cm}$
2 $33.3 \mathrm{~cm}$
3 $25 \mathrm{~cm}$
4 $50 \mathrm{~cm}$
Current Electricity

152871 When an unknown resistance ' $X$ ' is connected in the left gap of a meter bridge and a known resistance ' $R$ ' in the right gap, null point is obtained at $40 \mathrm{~cm}$ from left end. If a $2 \Omega$ resistance is connected in series with ' $X$ ' the null point shifts towards right by $10 \mathrm{~cm}$, with same resistance in right gap. The value of ' $X$ ' must be

1 $4 \Omega$
2 $2 \Omega$
3 $3 \Omega$
4 $1 \Omega$
Current Electricity

152872 To determine the internal resistance of a cell by using potentiometer, the null point is at $1 \mathrm{~m}$ when cell is shunted by $3 \Omega$ resistance and at a length $1.5 \mathrm{~m}$ when cell is shunted by $6 \Omega$ resistance. The internal resistance of the cell is

1 $6 \Omega$
2 $4 \Omega$
3 $2 \Omega$
4 $3 \Omega$
Current Electricity

152873 In a metre bridge experiment, the resistance in the left gap is $20 \Omega$ and in right gap is $60 \Omega$. The bridge is balanced. The distance of the null point from the centre of the wire is

1 $16 \mathrm{~cm}$
2 $20 \mathrm{~cm}$
3 $12 \mathrm{~cm}$
4 $25 \mathrm{~cm}$
Current Electricity

152874 The resistance in left and right gap of a meterbridge are $3 \Omega$ and $5 \Omega$ respectively. When the resistance in the left gap is increased by $10 \%$, the balance point shifts nearly by

1 $4.4 \mathrm{~cm}$ to the left
2 $2.2 \mathrm{~cm}$ to the right
3 $2.2 \mathrm{~cm}$ to the left
4 $4.4 \mathrm{~cm}$ to the right
Current Electricity

152870 Two resistance prepared from the wire of same material having diameter in the ratio $2: 1$ and lengths in the ratio $2: 1$ are connected in the left gap and right gap of Wheatstone's meter bridge respectively. The distance of the null point from left end of wire is

1 $66.7 \mathrm{~cm}$
2 $33.3 \mathrm{~cm}$
3 $25 \mathrm{~cm}$
4 $50 \mathrm{~cm}$
Current Electricity

152871 When an unknown resistance ' $X$ ' is connected in the left gap of a meter bridge and a known resistance ' $R$ ' in the right gap, null point is obtained at $40 \mathrm{~cm}$ from left end. If a $2 \Omega$ resistance is connected in series with ' $X$ ' the null point shifts towards right by $10 \mathrm{~cm}$, with same resistance in right gap. The value of ' $X$ ' must be

1 $4 \Omega$
2 $2 \Omega$
3 $3 \Omega$
4 $1 \Omega$
Current Electricity

152872 To determine the internal resistance of a cell by using potentiometer, the null point is at $1 \mathrm{~m}$ when cell is shunted by $3 \Omega$ resistance and at a length $1.5 \mathrm{~m}$ when cell is shunted by $6 \Omega$ resistance. The internal resistance of the cell is

1 $6 \Omega$
2 $4 \Omega$
3 $2 \Omega$
4 $3 \Omega$
Current Electricity

152873 In a metre bridge experiment, the resistance in the left gap is $20 \Omega$ and in right gap is $60 \Omega$. The bridge is balanced. The distance of the null point from the centre of the wire is

1 $16 \mathrm{~cm}$
2 $20 \mathrm{~cm}$
3 $12 \mathrm{~cm}$
4 $25 \mathrm{~cm}$
Current Electricity

152874 The resistance in left and right gap of a meterbridge are $3 \Omega$ and $5 \Omega$ respectively. When the resistance in the left gap is increased by $10 \%$, the balance point shifts nearly by

1 $4.4 \mathrm{~cm}$ to the left
2 $2.2 \mathrm{~cm}$ to the right
3 $2.2 \mathrm{~cm}$ to the left
4 $4.4 \mathrm{~cm}$ to the right
Current Electricity

152870 Two resistance prepared from the wire of same material having diameter in the ratio $2: 1$ and lengths in the ratio $2: 1$ are connected in the left gap and right gap of Wheatstone's meter bridge respectively. The distance of the null point from left end of wire is

1 $66.7 \mathrm{~cm}$
2 $33.3 \mathrm{~cm}$
3 $25 \mathrm{~cm}$
4 $50 \mathrm{~cm}$
Current Electricity

152871 When an unknown resistance ' $X$ ' is connected in the left gap of a meter bridge and a known resistance ' $R$ ' in the right gap, null point is obtained at $40 \mathrm{~cm}$ from left end. If a $2 \Omega$ resistance is connected in series with ' $X$ ' the null point shifts towards right by $10 \mathrm{~cm}$, with same resistance in right gap. The value of ' $X$ ' must be

1 $4 \Omega$
2 $2 \Omega$
3 $3 \Omega$
4 $1 \Omega$
Current Electricity

152872 To determine the internal resistance of a cell by using potentiometer, the null point is at $1 \mathrm{~m}$ when cell is shunted by $3 \Omega$ resistance and at a length $1.5 \mathrm{~m}$ when cell is shunted by $6 \Omega$ resistance. The internal resistance of the cell is

1 $6 \Omega$
2 $4 \Omega$
3 $2 \Omega$
4 $3 \Omega$
Current Electricity

152873 In a metre bridge experiment, the resistance in the left gap is $20 \Omega$ and in right gap is $60 \Omega$. The bridge is balanced. The distance of the null point from the centre of the wire is

1 $16 \mathrm{~cm}$
2 $20 \mathrm{~cm}$
3 $12 \mathrm{~cm}$
4 $25 \mathrm{~cm}$
Current Electricity

152874 The resistance in left and right gap of a meterbridge are $3 \Omega$ and $5 \Omega$ respectively. When the resistance in the left gap is increased by $10 \%$, the balance point shifts nearly by

1 $4.4 \mathrm{~cm}$ to the left
2 $2.2 \mathrm{~cm}$ to the right
3 $2.2 \mathrm{~cm}$ to the left
4 $4.4 \mathrm{~cm}$ to the right