My question is regarding Vdb. for pos flow of charge Vbd = -Vdb and Vdb = -VR2 so Vbd = VR2. This means that the current flowing from point d to point b gained potential energy. However the flow of charge from d to b are electrons and electrons lose potential energy as they move from lower to higher potentials. So when I look at it in that point of view Vbd should be equal to -VR2. Can someone clarify to me why I am wrong.