Question

A wire of resistance 20 ohm is bent to form a closed square.what is the resistance across a diagonal of the square?

Answer 1

wire is bend into square , each side has 5 Ω since each side of the square is equal  . there are 2 diagonals possible in a square which are equal. so if we make use of same wire to make their diagonals each diagonal will have 10 Ω.