Title: Reading Assignments
Course: WGF 107 DEVELOPMENT > Section: Content

Image | A simple electric circuit made up of a voltage source and a resistor. Here, , according to Ohm's Law.

Sub-Title | Circuitry Fundamentals - Measurements
Content
An electrical network is an interconnection of electrical elements such as resistors, inductors, capacitors, voltage sources, current sources and switches. An electrical circuit is a network consisting of a closed loop, giving a return path for the current. Linear electrical networks, a special type consisting only of sources (voltage or current), linear lumped elements (resistors, capacitors, inductors), and linear distributed elements (transmission lines), have the property that signals are linearly superimposable. They are thus more easily analyzed, using powerful frequency domain methods such as Laplace transforms, to determine DC response, AC response, and transient response.

A resistive circuit is a circuit containing only resistors and ideal current and voltage sources. Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors. If the sources are constant (DC) sources, the result is a DC circuit.

A network that contains active electronic components is known as an electronic circuit. Such networks are generally nonlinear and require more complex design and analysis tools.

Ohm

The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm. Although several empirically derived standard units for expressing electrical resistance were developed in connection with early telegraphy practice, the British Association for the Advancement of Science proposed a unit derived from existing units of mass, length and time and of a convenient size for practical work as early as 1861.

In a hydraulic analogy, passing current through a high-resistivity material is like pushing water through a pipe full of sand, while passing current through a low-resistivity material is like pushing water through an empty pipe. If the pipes are the same size and shape, the pipe full of sand has higher resistance to flow. But resistance is not solely determined by the presence or absence of sand; it also depends on the length and width of the pipe: short or wide pipes will have lower resistance than narrow or long pipes.
Links/Uploads
Wikipedia – The Free Internet Encyclopedia

Electrical Circuits http://en.wikipedia.org/wiki/Electrical_circuits

Ohm                                    http://en.wikipedia.org/wiki/Ohm

Resistivity                   http://en.wikipedia.org/wiki/Resistivity

- Bridge circuit
- Digital circuit
- Circuit diagram
- Circuit theory
- Diode bridge
- Quiescent current
- Ground (electricity)
- Hydraulic analogy
- Impedance
- Load
- Mathematical methods in electronics
- Memristor
- Netlist
- Network analyzer (electrical)
- Network analyzer (AC power)
- Open-circuit voltage
- LC circuit
- RC circuit
- RL circuit
- RLC circuit
- Lumped element model and distributed element model
- Potential divider
- Prototype filter
- Schematic
- Series and parallel circuits
- Short circuit
- Superposition theorem
- Topology (electronics)
- Continuity test
- Voltage drop
- Mesh analysis
Attributions | Image and Content courtesy of Wikipedia – The Free Internet Encyclopedia