152602 A tetrahedral is consisting of 6 identical wires as shown in the figure. Each wire is having a resistance of $4 \Omega$. When an ideal cell of emf $5 \mathrm{~V}$ is connected across $A B$ as shown, then current through $O R$ is

152605 Ten identical cells connected in series are needed to heat a wire of length one meter and radius ' $r$ ' by $10^{\circ} \mathrm{C}$ in time ' $t$ '. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time ' $t$ '?

152608 A current source drives a current in a coil of resistance $R_{1}$ for a time $t$. The same source drives current in another coil of resistance $R_{2}$ for same time. If heat generated is same, find internal resistance of source.

152610 A potentiometer is connected between $A$ and $B$ and the balance point is obtained at $203.6 \mathrm{~cm}$. when the end of the potentiometer connected to $B$ is shifted to $C$, then the balance point is obtained at $24.6 \mathrm{~cm}$. If now the potentiometer be connected between $B$ and $C$, the balance point will be at

152602 A tetrahedral is consisting of 6 identical wires as shown in the figure. Each wire is having a resistance of $4 \Omega$. When an ideal cell of emf $5 \mathrm{~V}$ is connected across $A B$ as shown, then current through $O R$ is

152605 Ten identical cells connected in series are needed to heat a wire of length one meter and radius ' $r$ ' by $10^{\circ} \mathrm{C}$ in time ' $t$ '. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time ' $t$ '?

152608 A current source drives a current in a coil of resistance $R_{1}$ for a time $t$. The same source drives current in another coil of resistance $R_{2}$ for same time. If heat generated is same, find internal resistance of source.

152610 A potentiometer is connected between $A$ and $B$ and the balance point is obtained at $203.6 \mathrm{~cm}$. when the end of the potentiometer connected to $B$ is shifted to $C$, then the balance point is obtained at $24.6 \mathrm{~cm}$. If now the potentiometer be connected between $B$ and $C$, the balance point will be at

152602 A tetrahedral is consisting of 6 identical wires as shown in the figure. Each wire is having a resistance of $4 \Omega$. When an ideal cell of emf $5 \mathrm{~V}$ is connected across $A B$ as shown, then current through $O R$ is

152605 Ten identical cells connected in series are needed to heat a wire of length one meter and radius ' $r$ ' by $10^{\circ} \mathrm{C}$ in time ' $t$ '. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time ' $t$ '?

152608 A current source drives a current in a coil of resistance $R_{1}$ for a time $t$. The same source drives current in another coil of resistance $R_{2}$ for same time. If heat generated is same, find internal resistance of source.

152610 A potentiometer is connected between $A$ and $B$ and the balance point is obtained at $203.6 \mathrm{~cm}$. when the end of the potentiometer connected to $B$ is shifted to $C$, then the balance point is obtained at $24.6 \mathrm{~cm}$. If now the potentiometer be connected between $B$ and $C$, the balance point will be at

152602 A tetrahedral is consisting of 6 identical wires as shown in the figure. Each wire is having a resistance of $4 \Omega$. When an ideal cell of emf $5 \mathrm{~V}$ is connected across $A B$ as shown, then current through $O R$ is

152605 Ten identical cells connected in series are needed to heat a wire of length one meter and radius ' $r$ ' by $10^{\circ} \mathrm{C}$ in time ' $t$ '. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time ' $t$ '?

152608 A current source drives a current in a coil of resistance $R_{1}$ for a time $t$. The same source drives current in another coil of resistance $R_{2}$ for same time. If heat generated is same, find internal resistance of source.

152610 A potentiometer is connected between $A$ and $B$ and the balance point is obtained at $203.6 \mathrm{~cm}$. when the end of the potentiometer connected to $B$ is shifted to $C$, then the balance point is obtained at $24.6 \mathrm{~cm}$. If now the potentiometer be connected between $B$ and $C$, the balance point will be at