Define an active network
Contains an emf source
Define a passive network
Contains no source of emf
Define a branch
Part of a circuit connecting two nodes
Define a Node
Point where two or more branches meet
Define a loop
Closed path formed by connecting branches
Explain how superposition theorem works
A source will have the same effect on a circuit whether it is alone or together with other sources
- Therefor we can analyse each source independently
What do we replace a voltage source with in superposition theorem
A wire
What do we replace a current source with in superposition theorem
A gap
Define Kirchhoff’s current law
At any node, the algebraic sum of all instantaneous currents at a node is always zero
Define Kirchhoff’s Voltage law
The algebraic sum of all instantaneous voltages around a loop is always zero
Define Thévenin’s Theorem for a voltage source
An active circuit with two terminals can be replaced by an equivalent circuit of constant voltage source E and series internal resistance r
Define Norton’s Theorem for a current source
An active circuit with two terminals can be replaced by an equivalent circuit of constant current source Iₛ
and a shunt resistance in parallel r
What can you do to help solve Thevenin equivalence circuits
Create an open circuit between the terminals
What can you do to help solve Norton equivalence circuits
Create a short circuit between the terminals
