Ohm's law states that voltage across many types of conducting materials is directly proportional to the current flowing through the material. U= Ri or R= i R--resis tance()( linear resistor) The resistor is a passive element that cannot deliver power or store energy
1. The basic concepts and the difference between them: OThe difference between a resultant R and the principal vector R'. Resultant force is the sum of the translational effect of the principal vector and the rotational effect of the principal moment (principal vector and principal moment reduce to a resultant force). (It depends on the point of application)
Definition A tree is a collection of nodes. The collection can be empty: otherwise, a tree consists of (1) a distinguished node r, called the root; (2)and zero or more nonempty(sub)trees T1,., Tk, each of whose roots are connected by a directed edge from r Note:
Introduction to New Classical Theories R.lucas Supply Function Rational Expectations and R.lucas Criterion Policy Implications Comparisons between New Classical and Keynesian Theories