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Examples
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The value of an alternating quantity (voltage or current) is called effective value (or r.m.s. value) if the same thermal effect is produced as caused by a corresponding direct quantity (voltage or current).
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This mean value is called effective value (or root mean square value = r.m.s. value).
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In the general use of alternating voltages and alternating currents, always effective (r.m.s.) values are involved.
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Determine the peak voltage for a) and the r.m.s. voltage for b)
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