A current of 2 A flows in a system of conductors as shown. The potential difference (VA - VB) will be

Current through each arm DAC and DBC = 1AVD−VA=2 and VD−VB=3⇒VA−VB=+1VALTERNATE METHOD:2 A Current will split into two equal parts to flow through DAC and  DBC  .applying  K V L between  A and B VA+1×2-1×3 =VB ∴ VA-VB=+1 V