Solved Numerical Problem No2 ( Unit-15: Alternating Current); HSSC-II (Class-12); Physics (New Book/KPK Text Board, Peshawar) With Verified Answers

The RMS value of current in an ac circuit is 10 A. What is the peak current? Ans. (14.1 A) 

Data Given:

Root Mean Square (rms) current = `\I_{rms}` = 10 A

To Find:

Maximum Current = `\I_{max}` = ?

Solution:

Since,

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

or

`\I_{max}` = `\sqrt 2` `\I_{rms}`

putting values

`\I_{max}` = `\sqrt 2` `\I_{rms}`

`\I_{max}` = 1.414 ｘ 10 A

`\I_{max}` = 14.142 A ------------------------Ans.

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