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The value of current in two series LCR c...

The value of current in two series `LCR` circuits at resonance is same when connected across a sinusodial voltage source. Then:

A

both circuits must be having same value of capacitance and inductor

B

in both circuits ratio of `L` and `C` will be same

C

for both the circuits `X_(L)//X_(C )` must be same at that frequency

D

both circuits must have same impedance at all frequencies

Text Solution

Verified by Experts

The correct Answer is:
C
`X_(L) = X_(C )` at resonance
`:. (X_(L))/(X_(C )) = 1`. For both circuits
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Knowledge Check

  • The value of current in tow series LCR circuits at resonance is same, then

    A
    both circuits must be having same value of capacitance and inductance
    B
    in both circuits ratio of L and C will be same
    C
    for both the circuits `(X_L)//(X_C)` must be same at that frequency
    D
    both circuits must have same impedance at all frequencies

  • In series LCR circuit at resonance

    A
    Power factor is zero
    B
    Power developed across the resistor is maximum
    C
    Power developed across the inductor is zero
    D
    Both (2) & (3)

  • In series LCR circuit at resonance,

    A
    current is maximum and impedance is maximum
    B
    current is maximum and impedance is minimum
    C
    current is minimum and impedance is maximum
    D
    current is minimum and pmpedance is minimum

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