152867 In potentiometer experiment when three cells $\mathrm{A}, \mathrm{B}, \mathrm{C}$ are connected in series the balancing length is found to be $740 \mathrm{~cm}$. If $A$ and $B$ are connected in series, balancing length is $440 \mathrm{~cm}$ and when $B$ and $C$ are connected in series, it is $540 \mathrm{~cm}$. The e.m.f. of $A, B$ and $C$ cells $E_{A}, E_{B}$, $E_{C}$ are respectively (in volt)
152869 Two unknown resistances are connected in two gaps of a meter bridge. The null point is obtained at $40 \mathrm{~cm}$ from left end. A $30 \Omega$ resistance is connected in series with the smaller of the two resistances, the null point shifts by $20 \mathrm{~cm}$ to the right end. The value of smaller resistance is
152867 In potentiometer experiment when three cells $\mathrm{A}, \mathrm{B}, \mathrm{C}$ are connected in series the balancing length is found to be $740 \mathrm{~cm}$. If $A$ and $B$ are connected in series, balancing length is $440 \mathrm{~cm}$ and when $B$ and $C$ are connected in series, it is $540 \mathrm{~cm}$. The e.m.f. of $A, B$ and $C$ cells $E_{A}, E_{B}$, $E_{C}$ are respectively (in volt)
152869 Two unknown resistances are connected in two gaps of a meter bridge. The null point is obtained at $40 \mathrm{~cm}$ from left end. A $30 \Omega$ resistance is connected in series with the smaller of the two resistances, the null point shifts by $20 \mathrm{~cm}$ to the right end. The value of smaller resistance is
152867 In potentiometer experiment when three cells $\mathrm{A}, \mathrm{B}, \mathrm{C}$ are connected in series the balancing length is found to be $740 \mathrm{~cm}$. If $A$ and $B$ are connected in series, balancing length is $440 \mathrm{~cm}$ and when $B$ and $C$ are connected in series, it is $540 \mathrm{~cm}$. The e.m.f. of $A, B$ and $C$ cells $E_{A}, E_{B}$, $E_{C}$ are respectively (in volt)
152869 Two unknown resistances are connected in two gaps of a meter bridge. The null point is obtained at $40 \mathrm{~cm}$ from left end. A $30 \Omega$ resistance is connected in series with the smaller of the two resistances, the null point shifts by $20 \mathrm{~cm}$ to the right end. The value of smaller resistance is
152867 In potentiometer experiment when three cells $\mathrm{A}, \mathrm{B}, \mathrm{C}$ are connected in series the balancing length is found to be $740 \mathrm{~cm}$. If $A$ and $B$ are connected in series, balancing length is $440 \mathrm{~cm}$ and when $B$ and $C$ are connected in series, it is $540 \mathrm{~cm}$. The e.m.f. of $A, B$ and $C$ cells $E_{A}, E_{B}$, $E_{C}$ are respectively (in volt)
152869 Two unknown resistances are connected in two gaps of a meter bridge. The null point is obtained at $40 \mathrm{~cm}$ from left end. A $30 \Omega$ resistance is connected in series with the smaller of the two resistances, the null point shifts by $20 \mathrm{~cm}$ to the right end. The value of smaller resistance is