H2P-381

Mean power in a.c. circuits

H2 Physics · JC 2 · Medium · Mean power in a.c. circuits

A sinusoidal a.c. supply has an r.m.s. voltage of

9.0\,\text{V}

across a resistor of resistance

6.0\,\Omega

. Using

P = V_{\text{rms}}^{2}/R

, calculate the mean power dissipated in the resistor.

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