Answer Posted / ranjith & eniyavan

As per KCL Sum Of Individual Current is Equal to Zero.
That's the Neutral Point is Zero.
In Unbalnce Condition the current will flow in neutral
point. that magnitude will Based on Faulty Current.
Balanced Condition Ia+Ib+Ic=0(N)
Unbalanced Condition Ib+Ic=-Ia(N)Faulty System only.

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