1(xii)
In the given circuits Y and Z, the resistors, R1 and R2, are connected in :

- (a)series in both the circuits
- (b)parallel in both the circuits
- (c)parallel in Y and series in Z
- (d)series in Y and parallel in Z
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parallel in both the circuits
Reason — Circuit Y may be redrawn as :
Both the resistors are connected across points A and B. Hence, those are connected in parallel.
Circuit Z may be redrawn as :
Both the resistors are connected across points A and B. Hence, those are connected in parallel.