Question

a wire whose resistance is 80 ohm is cut into 3 pieces of equal length which are arranged in parallel calculate the resistance of combination​

Answer 1

The resistance of each piece of wire will be80/3

We formula use:

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

When they r added in parallels then

3/80+3/80+3/80=1/R

R=80/9

R=8.8ohm