A wire of length l and area of cross-section A has thermal resistance R. What will be its thermal resistance if it is symmetrically folded n times ?

A wire of length l and area of cross-section A has thermal resistance

1.	A wire of length l and area of cross-section A has thermal resistance R. What will be its thermal resistance if it is symmetrically folded n times ?
Answer» `( R )/(N^(2))` `n^(2)R` `( R )/(2^(2N))` `2^(2n)R` ANSWER :C