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

The Peak to Peak Value[edit]

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

The Average Value[edit]

The Average Value is denoted as Va is defined as

Va = 0.6 V

The Root Mean Square Value[edit]

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

Vrms = 0.707 V