Скачать или смотреть The current phasor and resistor voltage phasor [AC circuit physics]

The vector representation of a sinusoidal function can make it brilliantly easy to add sinusoidal functions that differ in phase angle, and this is exactly the tool we need for AC circuit analysis!

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Starting with an animation of the current and resistance phasors rotating in phase and generating the associated sinusoidal functions, we introduce the idea of phasor analysis in AC circuits.

We take a closer look at the current phasor and how the projection of the rotating phasor generates the sinusoidal function for the current in a circuit.

Next, we look at the simplest AC circuit: a circuit with a sinusoidal power source and just one resistor. We derive the voltage function for the resistor then represent the current phasor and voltage phasor for the resistor in the same phasor diagram.

Finally, we animate the phasor diagram to generate the sinusoidal functions for current and voltage across the resistor for the simplest AC circuit.

Part of a short series on AC circuits:

Part 1: the current phasor and the voltage phasor for a resistor:
👉    • The current phasor and resistor voltage ph...  

Part 2: the voltage phasor for an inductor:
👉    • The inductor voltage phasor and inductive ...  

Part 3: the voltage phasor for a capacitor:
👉    • The capacitor voltage phasor and capacitiv...  

Part 4: phasor analysis of the RLC circuit:
👉    • RLC series circuit phasor analysis, impeda...  

Part 5: RMS values for current and voltage - full calculus derivations.
👉    • RMS values for current and voltage - full ...  

Part 6: Power calculations for inductors, capacitors and resistors.
👉    • Power in AC circuit elements - full calcul...  

Part 7: Power and the power factor in the RLC series circuit.
👉    • Power and the power factor in the series R...  

Part 8: Resonance in the RLC circuit + RLC power calculations. [TBA]

#physics #ACcircuits #phasors