Correct option (a) 1.5 A
Explanation:
In each row all the 5000 electroplaques are connected in series.
Therefore, equivalent emf = 0.15 x 5000 = 750 V.
Equivalent resistance = 0.25 x 5000 = 1250 Ω.
All 100 rows are connected in parallel. Therefore voltage = 750 V.