contestada

A metal wire of resistance R is cut into two pieces of equal length. The two pieces are connected together side by side. What is the resistance of the two connected wires?

Respuesta :

Answer: 2R

Explanation: Since they have been divided into equal halves of equal length, each has a resistance of R and can be treated as a single resistor.

If connected in series to each other, the equivalent resistance of both wires will be R + R = 2R