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Electrostatic Potential And Capacitance

Question

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The peak value of an a.c. circuit supply is 300 V. What is the r.m.s. voltage?

Solution

Given, peak voltage = 300 V

Hence,
Rms $voltage = \frac{Peak voltage}{\sqrt{2}}$

$= \frac{300}{\sqrt{2}} = 221.2 V .$

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