In L.C.R series A.C circuit, the phase angle between current and voltage is:
Correct answer: D. Any angle between 0 and π/2
- A. Any angle between 0 and ±π/2
- B. π/2
- C. π
- D. Any angle between 0 and π/2
Explanation
In an LCR (inductor, capacitor, resistor) series AC circuit, the phase angle between current and voltage depends on the values of inductance, capacitance, and resistance in the circuit. The phase angle is given by the arc tangent of the ratio of the reactance difference to the resistance:Tan (ϕ)= XL-XC/RWhere:XL is the inductive resistance.XC is the conductive resistance.R is the resistance.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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