357324 A potentiometer wire is 100 $cm$ long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 $cm$ and 10 $cm$ from the positive end of the wire in the two cases. The ratio of emf’s is:-

357325 Assertion :
A potentiometer of longer length is used for accurate measurement.
Reason :
The potential gradient for a potentiometer of longer length with a given source of e.m.f becomes small.

357326 A potentiometer is used for the comparison of emf of two cells $E_1$ and $E_2$. For cell $E_1$, the no deflection point is obtained at $20cm$ and for $E_2$, the no deflection point is obtained at $30cm$. The ratio of their emfs will be

357324 A potentiometer wire is 100 $cm$ long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 $cm$ and 10 $cm$ from the positive end of the wire in the two cases. The ratio of emf’s is:-

357325 Assertion :
A potentiometer of longer length is used for accurate measurement.
Reason :
The potential gradient for a potentiometer of longer length with a given source of e.m.f becomes small.

357326 A potentiometer is used for the comparison of emf of two cells $E_1$ and $E_2$. For cell $E_1$, the no deflection point is obtained at $20cm$ and for $E_2$, the no deflection point is obtained at $30cm$. The ratio of their emfs will be

357327 In a potentiometer, the null point is received at $7^{th}$ wire. If we have to change the null point at the $9^{th}$ wire, what should we do?

357324 A potentiometer wire is 100 $cm$ long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 $cm$ and 10 $cm$ from the positive end of the wire in the two cases. The ratio of emf’s is:-

357325 Assertion :
A potentiometer of longer length is used for accurate measurement.
Reason :
The potential gradient for a potentiometer of longer length with a given source of e.m.f becomes small.

357326 A potentiometer is used for the comparison of emf of two cells $E_1$ and $E_2$. For cell $E_1$, the no deflection point is obtained at $20cm$ and for $E_2$, the no deflection point is obtained at $30cm$. The ratio of their emfs will be

357327 In a potentiometer, the null point is received at $7^{th}$ wire. If we have to change the null point at the $9^{th}$ wire, what should we do?

357324 A potentiometer wire is 100 $cm$ long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 $cm$ and 10 $cm$ from the positive end of the wire in the two cases. The ratio of emf’s is:-

357325 Assertion :
A potentiometer of longer length is used for accurate measurement.
Reason :
The potential gradient for a potentiometer of longer length with a given source of e.m.f becomes small.

357326 A potentiometer is used for the comparison of emf of two cells $E_1$ and $E_2$. For cell $E_1$, the no deflection point is obtained at $20cm$ and for $E_2$, the no deflection point is obtained at $30cm$. The ratio of their emfs will be

357327 In a potentiometer, the null point is received at $7^{th}$ wire. If we have to change the null point at the $9^{th}$ wire, what should we do?