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Question

Physics Question on LCR Circuit

A resistor, capacitor and an inductor are connected in series and are in resonance. What is the phase difference between the supplied voltage and current ?

A

0∘0^{\circ}

B

90∘90^{\circ}

C

45∘45^{\circ}

D

60∘60^{\circ}

Answer

0∘0^{\circ}

Explanation

Solution

In series LCR circuit, at resonance XL=XCX_{L} = X_{C} tan ϕ=XL−XCR=0tan\, \phi =\frac{X_{L}-X_{C}}{R}=0 ϕ=0∘\phi=0^{\circ} Hence, the phase difference between supplied voltage and current is 0∘0^{\circ}