What is a purely reactive circuit?

What is a purely reactive circuit?

In a purely reactive circuit, no circuit power is dissipated by the load(s). Rather, power is alternately absorbed from and returned to the AC source. Voltage and current are 90° out of phase with each other. Voltage and current in such a circuit will be out of phase by a value somewhere between 0° and 90°.

What is the impedance of a purely resistive circuit?

Impedance, which is given the letter Z, in a pure ohmic resistance is a complex number consisting only of a real part being the actual AC resistance value, ( R ) and a zero imaginary part, ( j0 ). Because of this Ohm’s Law can be used in circuits containing an AC resistance to calculate these voltages and currents.

What is energy in purely circuits?

In a purely resistive circuit, the current and voltage are both in-phase and all the electrical power is consumed by the resistance, usually as heat. As a result, none of the electrical power is returned back to the source supply or circuit.

What is purely resistive AC circuit?

A circuit that contains only a pure resistance (ohms) in an AC circuit is called a Purely Resistive AC Circuit. From a technical standpoint, this circuit does not contain capacitance or inductance. In these circuits, the resistors dissipate the power, while the phase of the current and voltage remain the same.

How do you know if a circuit is inductive or capacitive or purely resistive?

If both inductors and capacitors are present then simply find the equivalent impedance of the load network. If the imaginary part of the equivalent impedance is positive then the load is inductive, if it is negative then it is capacitive, and if it is zero then it is resistive.

What is a resistive circuit?

A resistive circuit is a circuit containing only resistors and ideal current and voltage sources. Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors. If the sources are constant (DC) sources, the result is a DC circuit.

What is phase difference between voltage and current in purely inductive AC circuit?

The phase difference is <= 90 degrees. It is customary to use the angle by which the voltage leads the current. This leads to a positive phase for inductive circuits since current lags the voltage in an inductive circuit.

What are the power consumed in a purely resistive and purely inductive circuit?

In a purely resistive circuit, all circuit power is dissipated by the resistor(s). Voltage and current are in phase with each other. In a purely reactive circuit, no circuit power is dissipated by the load(s). Rather, power is alternately absorbed from and returned to the AC source.

What is a purely resistive AC circuit?

When a circuit is purely what is the inductive phase difference?

The phase difference is <= 90 degrees. It is customary to use the angle by which the voltage leads the current. This leads to a positive phase for inductive circuits since current lags the voltage in an inductive circuit. The phase is negative for a capacitive circuit since the current leads the voltage.

When circuit is purely capacitive phase difference is?

Where: IC = V/(1/ωC) (or IC = V/XC) is the current magnitude and θ = + 90o which is the phase difference or phase angle between the voltage and current. For a purely capacitive circuit, Ic leads Vc by 90o, or Vc lags Ic by 90o.

What makes an AC circuit a pure resistive circuit?

Pure Resistive AC Circuit The circuit containing only a pure resistance of R ohms in the AC circuit is known as Pure Resistive AC Circuit. The presence of inductance and capacitance does not exist in a purely resistive circuit. The alternating current and voltage both move forward as well as backwards in both the direction of the circuit.

How is AC power produced in a purely inductive circuit?

AC Power in a Purely Inductive Circuit In a purely inductive (that is infinite capacitance, C = ∞ and zero resistance, R = 0) circuit of L Henries, the voltage and current waveforms are not in-phase. Whenever a changing voltage is applied to a purely inductive coil, a “back” emf is produced by the coil due to its self-inductance.

Is the product of voltage and current the same in an AC circuit?

As in DC supply circuit, the product of voltage and current is known as the Power in the circuit. Similarly, the power is the same in the AC circuit also, the only difference is that in the AC circuit the instantaneous value of voltage and current is taken into consideration.

How is a DC Circuit different from an AC circuit?

In DC Circuit, the opposition to the flow of current is the only resistance of the circuit whereas the opposition to the flow of current in the AC circuit is because of resistance (R), Inductive Reactance (XL=2πfL) and capacitive reactance (XC = 1/2 πfC) of the circuit.