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Basic Electrical and Electronics Engineering formula key

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Formula key for Basic Electrical and Electronics Engineering It includes the following: parallel circuit, series circuit, ideal transformers, law of conservation of charge, law of conservation of energy, Ohm's law, fundamental theorem of network topology, Kirchoff's voltage law, nodal analysis, ...

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  • January 5, 2022
  • 44
  • 2021/2022
  • Class notes
  • Engr. christopher gelicame
  • All classes
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Elementary charge = 1.602 x 10-19 C
1 C = 6.24 x 1018 electrons
1 cm3 Cu = 8.5 x 1022 free electrons

1 cm3 Cu = 8.5 x 1022 free electrons

vab = -vba
1 Wh = 3600 J
𝜋
1 circular mil = sq. mils
4
1 inch = 1000 mils

,Parallel circuit has uniform voltage
Series circuit has uniform current
Surface area C plates: ↑area, ↑ capacitance

Spacing bet. C plates: ↓ spacing, ↑ capacitance

Permittivity C material: ↑permittivity,↑capacitance

Short circuits: R→0; v = 0

Open circuits: R→∞; i = 0
A short circuit An open circuit

,Capacitors in series have equal charges
↓ capacitance, ↑ voltage
Changes in q does not affect values of C
v in capacitance can’t change instantaneously

i in inductance can’t change instantaneously
I acts as short circuit to its terminals with dc
C acts as open circuit to its terminals with dc

v across C = v across parallel R

, Energy stored in Cp is uniform
Charge is uniform in Cs
Voltage is uniform in Cp

Spacing bet. C plates: ↓ spacing, ↑ capacitance

Permittivity C material: ↑permittivity,↑capacitance

Short circuits: R→0; v = 0

Open circuits: R→∞; i = 0
A short circuit An open circuit

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