Question

A wire is cut into three equal parts and then connected in parallel with the same source.
A)How will its resistance and resistivity gets affected?
B) How would the total current and the current through the parts change?

Answer 1

resistance will be 1/3 & resistivity will b unaffected

Answer 2

When wire is cutted into three equal parts and then connected in parallel with the same source
Then let the resistance of each wire is R
1) They are connected in parallel this effective resistance will be

1/R(eflective) = 1/R+1/R+1/R
= 3/R
So R(effective) = R/3

2) The total current will be 3( I ) if the initial current is I
The current through each part will be
I ampere