The peak voltage of an ac supply is 300 V. What is the RMS voltage? Ans (212.1V) 



Data Given:

Maximum Voltage = `\V_{max}` = 300 V


To Find:

Root Mean Square (RMS) voltage = `\V_{rms}` = ?


Solution:

Since,

`\V_{rms}` = `\frac {V_{max}}{sqrt 2}`

putting values

`\V_{rms}` = `\frac {300 V}{sqrt 2}`

`\V_{rms}` = `\frac {300 V}{1.414}`

`\V_{rms}` = 212.132 V ------------------------Ans.


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