1.

There are 8 equal resistances R. Two are connected in parallel, such four groups are connected in series, the total resistance of the system will be                                                                                                                                [MP PMT 1987]

A.            R / 2
B.                                      2 R
C.                    4 R                                    
D.            8 R
Answer» C.                    4 R                                    


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