Current, Voltage and Power
Resistors, Voltage Source and Current Sources
Power Dissipation and Power Conservation
Charge, Current and Voltage
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Current
Voltage
Charge
Circuits
Circuit Diagrams
A node in a circuit is all the points that are connected together via the interconnecting wires
Show the way in which the components are
connected
Function
Determine by which components are used and how they are interconnected
Definition
Consist of electrical or electronic components
interconnected with metal wires
Every electrical or electronic device is a circuit
Measure in Coulombs (C)
An electron has a charge −1.6 × 10−19C, a proton +1.6 × 10−19C
An electrical property possessed by some atomic particles
Unlike charges attract; like charges repel
Charge never accumulates in a conductor: everywhere in a conducting path stays electrically neutral at all times
the flow of charged particles past a measurement boundary
Using an ammeter, measure in Ampères (1 A = 1 C/s
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