Answer :

In a circuit, resistors are connected end-to-end are said to be in series, if the same current

exists in all of them through a single path. When resistances are connected in series, their equivalent resistance is equal to the sum of the individual resistances.


R = R1 + R2 + R3 + - - - - -



When resistances are connected in parallel, the reciprocal of their equivalent resistance is equal to the sum of the reciprocals of the individual resistances.


1/R = 1/R1 + 1/R2 + 1/ R3 + - - - - -



The resultant resistance is less than either of the individual resistances.


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