Physics > Alternating Current > 2.0 Alternating current and alternating voltage
Alternating Current
1.0 Introduction
2.0 Alternating current and alternating voltage
2.1 Instantaneous current and voltage
2.2 Mean or average current and voltage
2.3 Root mean square current and voltage
2.4 Form factor
3.0 Some important terms
4.0 Circuit element in AC circuit
4.1 Pure resistor circuit
4.2 Pure inductor circuit
4.3 Pure capacitor circuit
4.4 Series $L-R$ circuit
4.5 Series $C-R$ circuit
4.6 Series $L-C-R$ circuit
4.7 Resonance series $L-C-R$ circuit
4.8 Quality factor
4.9 Summary
5.0 Power in AC circuit
2.4 Form factor
2.2 Mean or average current and voltage
2.3 Root mean square current and voltage
2.4 Form factor
4.2 Pure inductor circuit
4.3 Pure capacitor circuit
4.4 Series $L-R$ circuit
4.5 Series $C-R$ circuit
4.6 Series $L-C-R$ circuit
4.7 Resonance series $L-C-R$ circuit
4.8 Quality factor
4.9 Summary
Form factor is defined as the ratio of rms value and average value.
Mathematically, $${\text{Form factor}} = \frac{{{\text{RMS value}}}}{{{\text{Average value}}}}$$
So, $${\text{Form factor}} = \frac{{\left( {\frac{{{V_0}}}{{\sqrt 2 }}} \right)}}{{\left( {\frac{{2{V_0}}}{\pi }} \right)}} = \frac{\pi }{{2\sqrt 2 }} \approx 1.11$$