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

152854 In balanced metre bridge $5 \Omega$ in the left gap and $R \Omega$ in the right gap. When $R \Omega$ is shunted with an equal resistance, the new balance point is at $1.6 l_{1}$ where ' $l_{1}$ ' is the earlier balancing length. The value of ' $l 1$ ' is

1 $25 \mathrm{~cm}$
2 $35 \mathrm{~cm}$
3 $30 \mathrm{~cm}$
4 $40 \mathrm{~cm}$
Current Electricity

152855 The given circuit is balanced Wheatstone's bridge. The value of resistance ' $x$ ' is

1 $12 \Omega$
2 $4 \Omega$
3 $6 \Omega$
4 $24 \Omega$
Current Electricity

152856 A galvanometer of resistance $20 \Omega$ has a current sensitivity of $5 \mathrm{div} / \mathrm{mA}$. The instrument has 50 divisions. It can be converted into a voltmeter reading upto 25 volt by connecting a resistance of

1 $2480 \Omega$ in series
2 $20 \Omega$ in parallel
3 $1240 \Omega$ in series
4 $2480 \Omega$ in parallel
Current Electricity

152857 In a Wheatstone's bridge, the resistance in the three arms are $P, Q, R$ and its fourth arm has a parallel combination of two resistances $S_{1}$ and $S_{2}$, The balancing condition of the bridge is

1 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{2 \mathrm{R}}{\mathrm{S}_{1}+\mathrm{S}_{2}}$
2 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{\mathrm{R}\left(\mathrm{S}_{1}+\mathrm{S}_{2}\right)}{2 \mathrm{~S}_{1} \mathrm{~S}_{2}}$
3 $\frac{P}{Q}=\left(\frac{R S_{1} S_{2}}{S_{1}+S_{2}}\right)$
4 $\frac{P}{Q}=\frac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}$
Current Electricity

152859 In potentiometer experiment, null point is obtained at a particular point on the potentiometer wire for a cell. If the length of the potentiometer wire is increased without changing the driving cell, the balancing length will.

1 remains same
2 increase
3 become zero
4 decrease
Current Electricity

152854 In balanced metre bridge $5 \Omega$ in the left gap and $R \Omega$ in the right gap. When $R \Omega$ is shunted with an equal resistance, the new balance point is at $1.6 l_{1}$ where ' $l_{1}$ ' is the earlier balancing length. The value of ' $l 1$ ' is

1 $25 \mathrm{~cm}$
2 $35 \mathrm{~cm}$
3 $30 \mathrm{~cm}$
4 $40 \mathrm{~cm}$
Current Electricity

152855 The given circuit is balanced Wheatstone's bridge. The value of resistance ' $x$ ' is

1 $12 \Omega$
2 $4 \Omega$
3 $6 \Omega$
4 $24 \Omega$
Current Electricity

152856 A galvanometer of resistance $20 \Omega$ has a current sensitivity of $5 \mathrm{div} / \mathrm{mA}$. The instrument has 50 divisions. It can be converted into a voltmeter reading upto 25 volt by connecting a resistance of

1 $2480 \Omega$ in series
2 $20 \Omega$ in parallel
3 $1240 \Omega$ in series
4 $2480 \Omega$ in parallel
Current Electricity

152857 In a Wheatstone's bridge, the resistance in the three arms are $P, Q, R$ and its fourth arm has a parallel combination of two resistances $S_{1}$ and $S_{2}$, The balancing condition of the bridge is

1 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{2 \mathrm{R}}{\mathrm{S}_{1}+\mathrm{S}_{2}}$
2 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{\mathrm{R}\left(\mathrm{S}_{1}+\mathrm{S}_{2}\right)}{2 \mathrm{~S}_{1} \mathrm{~S}_{2}}$
3 $\frac{P}{Q}=\left(\frac{R S_{1} S_{2}}{S_{1}+S_{2}}\right)$
4 $\frac{P}{Q}=\frac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}$
Current Electricity

152859 In potentiometer experiment, null point is obtained at a particular point on the potentiometer wire for a cell. If the length of the potentiometer wire is increased without changing the driving cell, the balancing length will.

1 remains same
2 increase
3 become zero
4 decrease
Current Electricity

152854 In balanced metre bridge $5 \Omega$ in the left gap and $R \Omega$ in the right gap. When $R \Omega$ is shunted with an equal resistance, the new balance point is at $1.6 l_{1}$ where ' $l_{1}$ ' is the earlier balancing length. The value of ' $l 1$ ' is

1 $25 \mathrm{~cm}$
2 $35 \mathrm{~cm}$
3 $30 \mathrm{~cm}$
4 $40 \mathrm{~cm}$
Current Electricity

152855 The given circuit is balanced Wheatstone's bridge. The value of resistance ' $x$ ' is

1 $12 \Omega$
2 $4 \Omega$
3 $6 \Omega$
4 $24 \Omega$
Current Electricity

152856 A galvanometer of resistance $20 \Omega$ has a current sensitivity of $5 \mathrm{div} / \mathrm{mA}$. The instrument has 50 divisions. It can be converted into a voltmeter reading upto 25 volt by connecting a resistance of

1 $2480 \Omega$ in series
2 $20 \Omega$ in parallel
3 $1240 \Omega$ in series
4 $2480 \Omega$ in parallel
Current Electricity

152857 In a Wheatstone's bridge, the resistance in the three arms are $P, Q, R$ and its fourth arm has a parallel combination of two resistances $S_{1}$ and $S_{2}$, The balancing condition of the bridge is

1 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{2 \mathrm{R}}{\mathrm{S}_{1}+\mathrm{S}_{2}}$
2 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{\mathrm{R}\left(\mathrm{S}_{1}+\mathrm{S}_{2}\right)}{2 \mathrm{~S}_{1} \mathrm{~S}_{2}}$
3 $\frac{P}{Q}=\left(\frac{R S_{1} S_{2}}{S_{1}+S_{2}}\right)$
4 $\frac{P}{Q}=\frac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}$
Current Electricity

152859 In potentiometer experiment, null point is obtained at a particular point on the potentiometer wire for a cell. If the length of the potentiometer wire is increased without changing the driving cell, the balancing length will.

1 remains same
2 increase
3 become zero
4 decrease
Current Electricity

152854 In balanced metre bridge $5 \Omega$ in the left gap and $R \Omega$ in the right gap. When $R \Omega$ is shunted with an equal resistance, the new balance point is at $1.6 l_{1}$ where ' $l_{1}$ ' is the earlier balancing length. The value of ' $l 1$ ' is

1 $25 \mathrm{~cm}$
2 $35 \mathrm{~cm}$
3 $30 \mathrm{~cm}$
4 $40 \mathrm{~cm}$
Current Electricity

152855 The given circuit is balanced Wheatstone's bridge. The value of resistance ' $x$ ' is

1 $12 \Omega$
2 $4 \Omega$
3 $6 \Omega$
4 $24 \Omega$
Current Electricity

152856 A galvanometer of resistance $20 \Omega$ has a current sensitivity of $5 \mathrm{div} / \mathrm{mA}$. The instrument has 50 divisions. It can be converted into a voltmeter reading upto 25 volt by connecting a resistance of

1 $2480 \Omega$ in series
2 $20 \Omega$ in parallel
3 $1240 \Omega$ in series
4 $2480 \Omega$ in parallel
Current Electricity

152857 In a Wheatstone's bridge, the resistance in the three arms are $P, Q, R$ and its fourth arm has a parallel combination of two resistances $S_{1}$ and $S_{2}$, The balancing condition of the bridge is

1 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{2 \mathrm{R}}{\mathrm{S}_{1}+\mathrm{S}_{2}}$
2 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{\mathrm{R}\left(\mathrm{S}_{1}+\mathrm{S}_{2}\right)}{2 \mathrm{~S}_{1} \mathrm{~S}_{2}}$
3 $\frac{P}{Q}=\left(\frac{R S_{1} S_{2}}{S_{1}+S_{2}}\right)$
4 $\frac{P}{Q}=\frac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}$
Current Electricity

152859 In potentiometer experiment, null point is obtained at a particular point on the potentiometer wire for a cell. If the length of the potentiometer wire is increased without changing the driving cell, the balancing length will.

1 remains same
2 increase
3 become zero
4 decrease
Current Electricity

152854 In balanced metre bridge $5 \Omega$ in the left gap and $R \Omega$ in the right gap. When $R \Omega$ is shunted with an equal resistance, the new balance point is at $1.6 l_{1}$ where ' $l_{1}$ ' is the earlier balancing length. The value of ' $l 1$ ' is

1 $25 \mathrm{~cm}$
2 $35 \mathrm{~cm}$
3 $30 \mathrm{~cm}$
4 $40 \mathrm{~cm}$
Current Electricity

152855 The given circuit is balanced Wheatstone's bridge. The value of resistance ' $x$ ' is

1 $12 \Omega$
2 $4 \Omega$
3 $6 \Omega$
4 $24 \Omega$
Current Electricity

152856 A galvanometer of resistance $20 \Omega$ has a current sensitivity of $5 \mathrm{div} / \mathrm{mA}$. The instrument has 50 divisions. It can be converted into a voltmeter reading upto 25 volt by connecting a resistance of

1 $2480 \Omega$ in series
2 $20 \Omega$ in parallel
3 $1240 \Omega$ in series
4 $2480 \Omega$ in parallel
Current Electricity

152857 In a Wheatstone's bridge, the resistance in the three arms are $P, Q, R$ and its fourth arm has a parallel combination of two resistances $S_{1}$ and $S_{2}$, The balancing condition of the bridge is

1 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{2 \mathrm{R}}{\mathrm{S}_{1}+\mathrm{S}_{2}}$
2 $\frac{\mathrm{P}}{\mathrm{Q}}=\frac{\mathrm{R}\left(\mathrm{S}_{1}+\mathrm{S}_{2}\right)}{2 \mathrm{~S}_{1} \mathrm{~S}_{2}}$
3 $\frac{P}{Q}=\left(\frac{R S_{1} S_{2}}{S_{1}+S_{2}}\right)$
4 $\frac{P}{Q}=\frac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}$
Current Electricity

152859 In potentiometer experiment, null point is obtained at a particular point on the potentiometer wire for a cell. If the length of the potentiometer wire is increased without changing the driving cell, the balancing length will.

1 remains same
2 increase
3 become zero
4 decrease