Electromagnetic Dimensions & Units Flashcards
Based on Section 12: Power Amplifiers of the Yamaha Sound Reinforcement Handbook
This unit measures what dimension of electromagnetism?
amperes or “amp”
symbol: A
current
Commonly represented by “I”
This unit measures what dimension of electromagnetism?
ohms
symbol: Ω
impedance and resistance
Commonly represented by “Z” and “R” respectively
This unit measures what dimension of electromagnetism?
volts
symbol: V
voltage
(electrical potential difference)
Commonly represented by “E”
This unit measures what dimension of electromagnetism?
watts
symbol: W
power
Commonly represented by “P” or “W”
This unit measures what dimension of electromagnetism?
farad
symbol: F
capacitance
Commonly represented by “C”
This unit measures what dimension of electromagnetism?
henry
symbol: H
inductance
Commonly represented by “L”
Name the dimension of electromagnetism.
I
current
stream of electrons that flows from point of highest to lowest potential
Measured in amperes, “amp”
Name the dimension of electromagnetism.
R
resistance
opposition to flow of DC current
Measured in ohms, “Ω”
Name the dimension of electromagnetism.
Z
impedence
opposition to the flow of AC current
Measured in ohms, “Ω”
Name the dimension of electromagnetism.
E
voltage
difference in electrical potential between two points
Measured in volts, “V”
Name the dimension of electromagnetism.
W
power
energy used to do the work of passing thru a load resistance/impedence
Measured in watts, “W”
Name the dimension of electromagnetism.
P
power
energy used to do the work of passing thru a load resistance/impedence
Measured in watts, “W”
Name the dimension of electromagnetism.
C
capacitance
capability of storing electrical charge
Measured in farads, “F”
Name the dimension of electromagnetism.
L
inductance
a conductor’s opposition to a change in the current flowing through it
Measured in henrys, “H”
Define the dimension of electromagnetism.
current
Commonly represented by “I”
the # of electrons that passes a certain point, flowing from the point of highest potential to the point of lowest potential
Measured in amperes or “amps”, “A”
