What is a pure resistance circuit? What is a pure resistance AC circuit?

What is a purely resistive circuit? A purely resistive circuit is one in which the inductance is so small that, at its typical frequency, its reactance is negligible compared to its resistance. Furthermore, in a purely resistive circuit, the entirety of the applied voltage is used to overcome the ohmic resistance of the circuit itself. Furthermore, another name for a purely resistive circuit is a non-inductive circuit.

Furthermore, in a purely resistive circuit, the phase angle between the current and voltage is zero. Furthermore, if we were to express the instantaneous current and the instantaneous applied voltage for a typical purely resistive circuit, it would show that the supplied voltage and current are indeed in phase with each other.

Furthermore, if we examine a graphical representation of the same circuit, we can see from its power curve that no part of the power cycle ever goes negative at any time. Therefore, in a purely resistive circuit, the power is never zero. Furthermore, this is due to the fact that the instantaneous values ​​of the current and voltage are always either negative or positive. Furthermore, the power cycle frequency of a purely resistive circuit is twice the frequency of the current and voltage waves.

The relationship between current and voltage dictates the type of resistor used in a circuit

What is a pure resistance AC circuit?

A circuit that contains only pure resistance (Ohms) in an AC circuit is called a pure resistance AC circuit. From a technical point of view, this circuit does not contain capacitance or inductance. The AC voltage and current move synchronously forward and backward in either direction of the circuit. Therefore, the AC voltage and current take the shape of a sine wave, hence it is called a sinusoidal waveform.

In these circuits, the resistor consumes power while the phase of the current and voltage remains constant. The current and voltage reach their maximum values ​​at the same time. It is important to note that a resistor is a passive component, which neither generates nor consumes electrical energy. So, what effect does a resistor have on power in a purely resistive circuit? It converts available energy into heat.

In an AC circuit, the ratio of current to voltage depends on the phase angle, phase difference, and power frequency. In addition, the resistance value of a resistor will remain constant regardless of the power frequency.