Circuit Concepts And Analysis Techniques Flashcards
Review module one of Electrical Engineering
Current is…
The rate of flow of charges.
Voltage is…
The difference in potential energy of a charge between two points.
Power is…
A measure of energy transfer per second. It is calculated by multiplying current and voltage (charges per second x energy per charge = energy per second).
Resistance is…
A measure of how a material or component reduces the flow of energy through it.
A Resistor is…
An electronic component that adds a set amount of resistance between two points. Current is maintained between the two sides of a Resistor, but voltage drops.
Ohm’s Law is…
Voltage = Current x Resistance.
A law that denotes the relationship between current, resistance and voltage.
An electrical load is…
Any object or component that recieves electrical energy from a circuit. If the voltage and current drawn by a load are known it can be simplified to a Resistor for the purposes of analysis.
Kirchhoff’s Voltage law is…
That all the voltages either added to or subtracted from a circuit must sum to zero.
Kirchhoff’s Current Law states…
That all of the currents entering and leaving a node of a circuit must sum to zero.
An ideal current source is…
An idealised electrical component that maintains a set current across itself. It will supply or draw whatever energy it has to in order to maintain a set current.
Equivalent Resistance is…
A term for the process of working out the total resistance of a set of components, in either parallel or series, then replacing those components with a single Resistor of “Equivalent Resistance”. This can be done multiple times in order to simplify a circuit.
A parallel circuit…
Is one in which the both ends of a component (or set of components) meet at the same place as another component (or set of components).
Also known as a current divider.
A series circuit is…
One in which a component is attached to another through a single node with no other connections in between.
Also known as a voltage divider.
What is Voltage division?
In a series circuit, or series circuit loop the voltage is divided between the resistances porportionally based on the value of those resistances.
What is Current Division?
In a parallel circuit or a parellel circuit loop the current is divided amongst the branches, based on the inverse of the resistances of the branches.
