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Choose the correct statement from the fo...

Choose the correct statement from the following

A

If n identical cells, each of emf E and internal resistance r are connected in series, the emf of combination in nE and the internal resistance of the combination is nr.

B

If n identical cells, each of emf E and internal resistance r are connected in parallel, the emf of the combination is E/n and the internal resistance of the combination is r/n

C

Cells should be connected in series, if the external resistance R is greater than internal resistance r

D

Cells should be connected in parallel if R is smaller than r

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The correct Answer is:
A, C, D
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