Question

When n identical resistors each of R resistance are connected in series,the equivalent resistance is 20ohm what would be the equivalent resistance when they are connected such that they are parallel to each other

Answer 1

Answer:

n²/20  or 20/R²

Explanation:

if n identical resistance are connected in series then their equivvalent resistance will be nR

   nR ≈ 20Ω

if they will be connected in parallel then their equivalent resistance will be n/R.

from above putting r≈ 20/n or n≈ 20/r

we get.

 parallel resistance equal to n²/20 or 20/R²