Assertion :In series $L - C - R$ $A C$ circuit, current and voltage are in same phase at resonance. Reason: In series $L - C - R$ $A C$ circuit, resonant frequency does not depend on the value of resistance. Hence current, at resonance, does not depend on resistance.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
At resonance $X_{L} = X_{C} \Rightarrow Z = R$
Hence $I = \frac{V}{Z} = \frac{V}{R}$
So, current at resonance depends on $R$ .

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Similar questions

Assertion (A) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
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Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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(c) Assertion is correct, but reason is incorrect
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ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

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Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

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Assertion :In series L−C−R AC circuit, current and voltage are in same phase at resonance. Reason: In series L−C−R AC circuit, resonant frequency does not depend on the value of resistance. Hence current, at resonance, does not depend on resistance.

The correct option is C Assertion is correct but Reason is incorrectAt resonance XL=XC⇒Z=RHence I=VZ=VRSo, current at resonance depends on R.

Assertion :In series $L - C - R$ $A C$ circuit, current and voltage are in same phase at resonance. Reason: In series $L - C - R$ $A C$ circuit, resonant frequency does not depend on the value of resistance. Hence current, at resonance, does not depend on resistance.

The correct option is C Assertion is correct but Reason is incorrect
At resonance $X_{L} = X_{C} \Rightarrow Z = R$
Hence $I = \frac{V}{Z} = \frac{V}{R}$
So, current at resonance depends on $R$ .