1.basic concepts
DESCRIPTION
electricTRANSCRIPT
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BASIC CONCEPTS
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Electric Circuit
An electric circuit is an interconnection of electrical elements.
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Systems of UNITS
Quantity Basic Unit SymbolLength meter m
Mass kilogram kg
Time second s
Electric current ampere A
Thermodynamic Temperature
kelvin K
Luminous intensity
candela cd
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The SI Prefixes
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Charge and Current
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Electric Current
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Electric Current
The charge transferred between time t0 and t
o
t
tq idt
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Voltage
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Power
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Energy
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Passive Sign Convention
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PSC: Example I
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PSC: Example II
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PSC: Example III
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Circuit Elements
Ideal Independent Source: provides a specified voltage or current that is completely independent of other circuit variables
Ideal Independent Voltage Source:
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Circuit Elements
Ideal independent current source
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Circuit Elements
Ideal dependent voltage source
Ideal dependent current source