The resistance of a 10 m long potentiometer wire is `10 Omega`. If the current through it is `0.4` A, what are the balancing lenghts when two cells of emfs `1.3 V` and `1.1V` are connected so as to (i) assist (ii) oppose each other?

Explanation

To solve the problem, we need to find the balancing lengths when two cells of EMFs 1.3 V and 1.1 V are connected in two different configurations: (i) assisting each other and (ii) opposing each other.

### Given Data:
- Length of the potentiometer wire (L) = 10 m
- Resistance of the wire (R) = 10 Ω
- Current through the wire (I) = 0.4 A
- EMF of the first cell (E1) = 1.3 V
- EMF of the second cell (E2) = 1.1 V
...