Question

a metal cube of edge 1 cm is drawn into a uniform wire of length 4 m. The wire is cut into 3 pieces of equal length and then joined to form a triangle. Find the effective resistance between any two vertices (row = 0.5 * 10^-6​

Answer 1

Edge of cube =1 cm

Volume of cube (1)3=1cm3=1000mm3

Diameter of wire =4mm

Radius of wire =2mm

Now, volume remains same 

Therefore, volume of wire = volume of cube 

πr2h=1000mm3π×2×2×h=1000h=4π1000=π250mmh=π25cm

Hope it helped