Representation of AC Current and Voltage By Rotating Vectors-Phasors
Representation of AC Current and Voltage By Rotating Vectors-Phasors: Overview
This topic consists of various concepts like Phasor Diagram in AC,Phasor Diagram for Pure Resistance Circuit,Phase Difference in Voltage and Current in Pure Resistance, etc.
Important Questions on Representation of AC Current and Voltage By Rotating Vectors-Phasors
Given below are two statements:
Statement-I: In an ac circuit, the current through a capacitor leads the voltage across it.
Statement-II: In a.c. circuits containing pure capacitance only, the phase difference between the current and the voltage is In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements:
Statement-I: In an ac circuit, the current through a capacitor leads the voltage across it.
Statement-II: In a.c. circuits containing pure capacitance only, the phase difference between the current and the voltage is
In the light of the above statements, choose the most appropriate answer from the options given below:

Select the correct phasor diagram of the circuit having only resistance.

Discuss the phasor diagram of an a.c circuit with a pure resistance only.

An A.C source supply voltage, is applied to a pure resistance circuit containing resistance . Calculate the peak value of current.

If in ac circuit there is no leading or lagging between supplied voltage and current then ac circuit is named as

In a certain circuit, and . Their vector representation is

In a circuit made up of resistance , and inductance , an alternating emf at is connected, then the phase difference between the current and the emf in the circuit is:

resistance and inductance are connected in series with an circuit. The frequency of the source is . Then phase difference in between and will be :-

In series circuit, the phase angle between supply voltage and current is

Voltage and current in an AC circuit are given by and

For the equation where is in seconds, find amplitude and time period.

If the input voltage to the circuit below is given by the output voltage is given by .
Which one of the following four graphs best depict the variation of vs ?

In an A.C. circuit, the resistance is connected in series with an inductor of self-inductance . If phase angle between voltage and current be , the value of inductive reactance will be equal to.....

In an L.C.R. series a.c. circuit, the current

The circuit given in figure has a resistanceless choke coil and a resistance . The voltage across and are given in figure. The virtual value of the applied voltage is

In a series LCR circuit the rms voltages across the inductance, capacitance and resistance are respectively , and . The RMS voltage of the AC source in the circuit is

In a circuit and are connected in series with an alternating voltage source of frequency . The current leads the voltage by . The value of is

If a circuit made up of a resistance and inductance 0.01 H, an alternating emf 200 volt at 50 Hz is connected, then find the phase difference between the current and the emf in the circuit
