Question

3. A wire of resistance Ris cut into three equal parts. Find the value of
resistance of each part in terms of the original resistance R. and if these
three pieces are connected in parallel, what is the ratio of the equivalent
resistance so obtained with the original resistance?​

Answer 1

Answer:

since, R= (P*L)/A(p=resistivity of the material)(L= length of the material)(A=cross-sectional area os the materil.) thus, when we cut resistance into three equal pieces(lets suppose): new r=(p*(L/3))/A which makes it as r= ((p*L)/A)1/3.