Question

An array of cells consists of 100 rows of a combination of 20 identical cells in series. If emf of each
cell is 2V and internal resistance is 4ohm, then the net EMF and internal resistance of the array is
(1) 20 V, 0.8ohm
(2) 40 V, 80ohm
(3) 40 V, 0.8ohm
(4) 20 V, 80ohm​

Answer 1

Answer:

(3). 40 v , 0.8 ohm is correct answer