What is the mean power output of a system of 240 volts alternating at 50 hertz acroos a resistance of 50 homs ?
What is the mean power output of a system of 240 volts alternating at 50 hertz acroos a resistance of 50 homs ?
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- V = 240 VAC Vrms = 0.707(240) Vrms = 169.68 VAC R = 50 Ω Pm = (Vrms)² / R Pm = (169.68)² / 50 Pm = (2.879 x 10^4) / 50 Pm = 575.826 W ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
- When you specify an AC voltage without any qualifiers (like peak or peak-peak), it is usually assumed to be the RMS voltage. In that case the power is 240*240/50 or 1152 watts.
- P= V*V/R P=240*240/50 P= 1152 watts
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