Question

A uniform wire with a resistance of 27ohm is divided into 3 equal pices and then they are joined in parallel . find the equivalent resistance of the parallel combination.​

Answer 1

Answer

R=27 ohm

after dividing them into equal parts,

resistance of each part =9 ohm

when connected in parallel,

1/9+1/9+1/9=1/R

3(1/9)=1/R

1/3=1/R

R=3 ohm