Question 355: AC fundamentals

Question

An alternating voltage $$E=200 \sqrt{2} \sin (100 t)$$ volt is connected to a $$1 \mu \mathrm{f}$$ capacitor through an a.c. ammeter. The reading of the ammeter shall

Accepted Answer

$$\begin{aligned}
\mathrm{V}_{\mathrm{rms}} & =\frac{\mathrm{I}_{\mathrm{ms}}}{\mathrm{X}_{\mathrm{C}}} \
	herefore \quad & \mathrm{I}_{\mathrm{rms}}=\frac{\mathrm{V}_0 \omega \mathrm{C}}{\sqrt{2}}=\frac{200 \sqrt{2} 	imes 100 	imes 1 	imes 10^{-6}}{\sqrt{2}}=20 \mathrm{~mA}
\end{aligned}$$
Ammeters always read r.m.s. value of the current.

Answer

10 mA

Answer

20 mA

Answer

40 mA

Answer

80 ma

AC fundamentals

An alternating voltage $E=200 \sqrt{2} \sin (100 t) volt is connected to a 1 \mu \mathrm{f}$ capacitor through an a.c. ammeter. The reading of the ammeter shall

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