Definition
AC voltage
(E11.1.1) E11.1 · Phasors →Statement
A sinusoidal source voltage oscillating at angular frequency ω.
Symbols and units
| instantaneous voltage | V | |
| peak voltage | V | |
| angular frequency | rad/s |
When it applies
A sinusoidal AC source, at angular frequency ω.
Derivation
Represented as the projection of a phasor — a vector of length V_max rotating at angular speed ω — onto a fixed axis:
Watch out for
Household 'voltage' (such as 230 V) is an RMS value, not the peak — the actual peak voltage is √2 times larger.
Connects to