Answer to Q.2

 

Suppose the current flowing though two segments are i₁ and i₂ respectively. i₁ flows in two branches as i₁₁ and i₁₂ . Let us assume the following:

Kirshoff's law can be applied in the following manner:

or

Solving further,

Further,

or

or

Similarly in the other loops,

or

Hence

or

And

or

Hence,