Question 367: AC fundamentals

Question

In an a.c. circuit the instantaneous current and emf are represented as $$\mathrm{I}=\mathrm{I}_0, \sin [\omega \mathrm{t}-\pi / 6]$$ and $$\mathrm{E}=\mathrm{E}_0 \sin [\omega \mathrm{t}+\pi / 3]$$ respectively. The voltage leads the current by

Accepted Answer

Given $$\phi_1=\frac{\pi}{6}$$ and $$\phi_2=\frac{\pi}{3}$$
$$	herefore \quad \Delta \phi=\frac{\pi}{3}-\left(\frac{-\pi}{6}ight)=\frac{\pi}{2}$$

Answer

$$\frac{\pi}{2}$$

Answer

$$\frac{\pi}{4}$$

Answer

$$\frac{\pi}{3}$$

Answer

$$\frac{\pi}{6}$$

AC fundamentals

In an a.c. circuit the instantaneous current and emf are represented as $\mathrm{I}=\mathrm{I}_0, \sin [\omega \mathrm{t}-\pi / 6] and \mathrm{E}=\mathrm{E}_0 \sin [\omega \mathrm{t}+\pi / 3]$ respectively. The voltage leads the current by

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