Question 256: AC fundamentals

Question

The value of alternating e.m.f. (E) in the given circuit is

Accepted Answer

$$ \begin{aligned} \mathrm{V} & =\sqrt{\mathrm{V}_{\mathrm{R}}^2+\left(\mathrm{V}_{\mathrm{L}}-\mathrm{V}_{\mathrm{C}}ight)^2} \ & =\sqrt{(40)^2+(20-50)^2} \ & =\sqrt{(40)^2+(30)^2} \ & =\sqrt{1600+900} \ & =\sqrt{2500} \ 	herefore \quad \mathrm{~V} & =50 \mathrm{~V} \end{aligned} $$

Answer

30 V

Answer

60 V

Answer

50 V

Answer

110 V

AC fundamentals

The value of alternating e.m.f. (E) in the given circuit is

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