So the goal in this case is to find k, the gain of the dependent source shown as a diamond. Formula for dependent voltage sources: V=g*V0 In this case V=k*Va I would get a negative value for k, because k=V/Va=-10V/(0.2A*10Ω)=-5 But can you have a negative value for k? Is that possible? Or did I get the signs wrong? Thanks in advance.