Physics

Physics

Problem

Which of the following relations correctly connects the phase difference ϕ\phi (in rad) between voltage and current with the corresponding time lag Δt\Delta t (in s) for an AC source of angular frequency ω\omega? a) ϕ=ω Δt2π\phi = \dfrac{\omega\,\Delta t}{2\pi} b) ϕ=ω Δt\phi = \omega\,\Delta t c) ω=2π ϕΔt\omega = \dfrac{2\pi\,\phi}{\Delta t} d) ϕ=2π ω Δt\phi = 2\pi\,\omega\,\Delta t

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