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Which is not correct for average power \( \mathrm{P} \) at
P resonance:
(1) \( \mathrm{P}=\mathrm{I}_{\mathrm{rms}} \mathrm{V}_{\mathrm{rms}} \)
(2) \( \mathrm{P}=\frac{\mathrm{V}}{\sqrt{2}} \frac{\mathrm{I}}{\sqrt{2}} \)
(3) \( \mathrm{P}=\mathrm{VI} \)
(4) \( \mathrm{P}=\mathrm{I}_{\mathrm{rms}}^{2} \mathrm{R} \)
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