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Q.

When resonance is produced in a series L-C-R circuit, then which of the following is not correct?

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a

 Inductive and capacitive reactiances are equal

b

 Current in the circuit is in phase with the applied voltage.

c

 Impedance of the circuit is maximum.

d

 If R is reduced , the voltage across capacitor will increase  

answer is D.

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Detailed Solution

At resonance  XL=XC, hence the current is in phase and Z is minimum and is equal to R        

If R is reduced then current increases so voltage increases across capacitor

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