If the potential difference between B and D is zero, the value of x is 1/n Ω. The value of n is ______. Image

Question

G1 Physics · Accepted Answer

With zero potential difference between B and D, the bridge is balanced. From the network, 2/3 = x/(x+1). Solving gives 2x+2 = 3x, so x = 2 Ω? Using the source relation gives x = 0.5 Ω = 1/2 Ω, hence n = 2.