What is the relation between current and voltage in an AC circuit?

Capacitors in AC circuits If the AC supply is connected to a resistor, then the current and voltage will be proportional to each other. This means that the current and voltage will “peak” at the same time.

What is the phase difference between applied AC voltage and current?

The phase difference between current and voltage in an AC circuit is π4 radian.

What is the phase relation between current and the voltage in an AC circuit containing an ideal capacitor?

Show that the current leads the voltage in phase by π/2 in an AC circuit containing an ideal capacitor.

What is the phase angle relationship between applied AC voltage and circuit current in a purely inductive circuit prove your answer?

The applied voltage must be equal and opposite to the self-induced EMF at all times; therefore, the current lags the applied voltage by 90° in a purely inductive circuit.

What is the phase relationship between voltage and current in a purely resistive circuit?

Moreso, in a purely resistive circuit, the phase angle between current and voltage is zero. Additionally, if we were to express the instantaneous current and instantaneous applied voltage of a typical purely resistive circuit, it will indicate that the supplied voltage and current are indeed in phase with each other.

What is phase difference between applied AC voltage and current in an LCR series circuit at resonance?

In an AC circuit containing, L, C and R, the voltage is ahead of current in the inductor by π/2 and the voltage is behind current in the capacitor by π/2. So, the phase difference between the voltage across inductor, VL , and the voltage across capacitor, VC , is π/2 + π/2 = π.

What is phase angle in AC circuit?

In electronics, phase angle refers to the number of electrical degrees of lag or lead between the voltage and current waveforms in an ac circuit.

What is the relation between line voltage and phase voltage for Star and Delta Connection?

In star connection, line voltage is √3 times the phase voltage. In star connection, phase voltage is 1/√3 times the line voltage. For Delta connection, the line voltage and phase voltage are equal.

What is the relationship between the voltage waveform and the current waveform in a resistive circuit?

Resistive Circuits If the voltage waveform and the current waveform are examined together as shown in Figure 5.12, it can be seen that when the voltage is at a maximum or peak, the current is also at a maximum or peak. The current flow is less as the value of the instantaneous voltage decreases.

What is the relationship between induced voltage and current phase?

Voltage and Current Phase Relationships in an Inductive Circuit. Later, when the current is increasing from zero to its maximum negative value at 360° (point d to point e), the induced voltage is of the opposite polarity as the current and tends to keep the current from increasing in the negative direction.

What is the phase angle of current in a parallel circuit?

The current through the resistive branch of a parallel circuit is? out-of-phase with the current through the inductive branch. In a parallel circuit, IR and IL must be added vectorially to find the total current. When analyzing the current in a parallel RL circuit with a large R and a small value of XL, the phase angle theta is close to 0°.

Which voltage is applied across a pure inductor?

An AC voltage V = V0 sin wt is applied across a pure inductor Obtain an expression for the current / in the circuit and hence obtain the inductive reactance of the circuit and the phase of the current flowing with respect to the applied voltage. [All India 2010C]

Does current flow in the opposite direction in alternating current?

15-4: Alternating Current After the first half-cycle, polarity reverses and current flows in the opposite direction. The negative half-cycle of applied voltage is as useful as the positive half-cycle in producing current. The direction does not matter in the application.