Practical Electronics/Alternating current

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Alternating current or AC refers to current that has amplitude varies sinusoidally and can be expressed mathematically

Vac = V Sin(ωt + θ)

The highest voltage is V . One cycle of Sin wave has one highest positive value at θ = π/2 and one highest negative value at θ = -π/2

Vac = ±V at θ = ± π/2

[edit] The Peak to Peak Value

The value between ±V or in scalar equals to 2V

[edit] The Average Value

The Average Value is denoted as V_rms is defined as

V_rms = 0.6 V

[edit] The Root Mean Square Value

The Root Mean Square Value is denoted as V_rms is defined as

V_rms = 0.707 V