Question $2$

A $2-$wire d$.$c$.$ distributor ABCDEA in the form of a ring main is fed at point A at $220$ V and is loaded as under:

$10$A at B; $20$A at C; $30$A at D and $10$ A at E $.$

The resistances of various sections $($go and return$)$ are: $AB=0\mathrm{.}1$;$BC=0\mathrm{.}05$;$CD=0\mathrm{.}01$;$DE=0\mathrm{.}025$ and $EA=0\mathrm{.}075.$

Determine:

The point of minimum potential

The current in each section of distributor.