Question

A wire of resistance R is cut into three equal pieces. These pieces are connected in parallel and the equivalent resistance of the combination is R'. Then the ratio R/R' is:

Answer 1

Explanation:

IF WIRE IS CUT INTO THREE EQUAL PARTS THEN THE RESISTANCE OF EACH WIRE IS R/3

IF THEY ARE ARRANGED IN PARALLEL THEN NEW RESISTANCE WILL BE R/9

THEN DIVIDING IT WE GET THE RESULT TO BE 9

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