Practical Electronics/Alternating current

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 The Peak to Peak Value The value between ±V or in scalar equals to 2V The Average Value The Average Value is denoted as Va is defined as Va = 0.6 V The Root Mean Square Value The Root Mean Square Value is denoted as Vrms is defined as Vrms = 0.707 V