Physics Ncert Solutions Class 12th Alternating Current Overview Class 12th Physics Alternating Current

7.2 (a) The peak voltage of an ac supply is 300 V. What is the rms voltage?

(b) The rms value of current in an ac circuit is 10 A. What is the peak current?

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Payal Gupta | Contributor-Level 10

8 months ago

7.2 Peak voltage of the AC supply, $V_{o}$ = 300 V

RMS voltage is given by $V_{r m s}$ = $\frac{V_{o}}{\sqrt 2}$ = $\frac{300}{\sqrt 2}$ = 212.13 V

The rms value of current, I = 10 A

Peak current $I_{o}$ = $\sqrt[]{2} I$ = $\sqrt[]{2} * 10 = 14.1 A$

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$I = Q_{0 . ω}$

$= \frac{C V}{\sqrt[]{L C}} = V \sqrt[]{\frac{C}{L}}$

$= 12 \sqrt[]{\frac{100 \times 1 0^{- 6}}{10 \times 1 0^{- 3}}}$

= 1.2 A

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Physics Ncert Solutions Class 12th 2023

Physics Ncert Solutions Class 12th 2023

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