Determine the rms value of a semi-circular current wave which has a...

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Determine the rms value of a semi-circular current wave which has a maximum value of a
\( \mathrm{P} \)
W
(1) \( (1 / \sqrt{3}) a \)
(2) \( \sqrt{(3 / 2)} a \)
(3) \( \sqrt{(2 / 3)} a \)
(4) \( (1 / \sqrt{2}) a \)
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