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5 rows of 10 identical cells, connected ...

5 rows of 10 identical cells, connected in series, send a current `I` through an external resistance of 20 ohm. If the emf and internal resistance of each cell is 1.5 volt and `1 Omega` respectively then the value of `I` (amp) is

A

0.75

B

0.68

C

0.14

D

0.25

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