Solution) Bulbs in parallel glows brighter than bulbs in series as in parallel circuit same voltage flows through both the bulbs .
E = V(c) = V(D)
Where as in series voltage gets divided between the bulbs so here
V(A) = V(B) = E/2
as these are identical bulbs so same resistance and power is cobsidered .
So from above we can rank them as
Brightest to dimmest
C = D > A = B
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