Home
Class 12
PHYSICS
For an RLC circuit driven with voltage o...

For an RLC circuit driven with voltage of amplitude `v_m` and frequency `omega_0=1/sqrt(LC)` the current exibits resonance. The quality factor, Q is given by :

A

`(omega_0L)/R`

B

`(omega_0R)/L`

C

`R/((omega_0C))`

D

`(CR)/omega_0`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENTS

    KUMAR PRAKASHAN|Exercise SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)|188 Videos
  • ATOMS

    KUMAR PRAKASHAN|Exercise Section-D -MCQs asked in GUJCET / Board Exam|34 Videos

Similar Questions

Explore conceptually related problems

A series LCR circuit with L = 0.12 H, C = 480 nF, R = 23 Omega is connected to a 230 V variable frequency supply. (a) What is the source frequency for which current amplitude is maximum. Obtain this maximum value. (b) What is the source frequency for which average power absorbed by the circuit is maximum. Obtain the value of this maximum power. (c) For which frequencies of the source is the power transferred to the circuit half the power at resonant frequency? What is the current amplitude at these frequencies? (d) What is the Q-factor of the given circuit?

An inductor of inductance L and resistance R is connected of A.C. circuit having angular frequency of omega . The value of quality factor Q is ……

For an LCR circuit driven at frequency omega , the di equation reads L (di)/(dt)+Ri+ q/C=V_i=V_m sin omegat (a) Multiply the equation by i and simplify where possible. (b) Interpret each term physically. (c) Cast the equation in the form of a conservation of energy statement. (d) Integrate the equation over one cycle to find that the phase difference between v and i must be acute.

For given CE biasing circuit, if voltage across collector-emitter is 12 V and current gain is 100 and base current is 0.04 mA then determine the value of collector resistance R_(C) . .

Figure shows a series LCR circuit connected to a variable frequency 230 V source. L = 5.0 H, C = 80muF, R = 40 Omega . (a) Determine the source frequency which drives the circuit in resonance. (b) Obtain the impedance of the circuit and the amplitude of current at the resonating frequency. (c) Determine the rms potential drops across the three elements of the circuit. Show that the potential drop across the LC combination is zero at the resonating frequency.

In an AC circuit current is 3 A and voltage 210 V and power is 63 W. The power factor is …….

An alternating current of frequency f is flowing in a circuit containing only a inductor L. If V_0 and I_0 represent peak values of voltage and current respectively , the average power given by source to inductor is equal to ……

A sinusoidal voltage of amplitude 25 volts and frequency 50 Hz is applied to a half wave rectifier using PN diode. No filter is used and the load resistor is 1000 Omega . The forward resistance R_(f) ideal diode is 10 Omega . Calculate. (i) Peak, average and rms values of load current (ii) d.c power output (ii) a.c power input (iv) % Rectifier efficiency (v) Ripple factor.

A transverse sinusoidal wave of amplitude a , wavelength lambda and frequency f is travelling on a stretched string. The maximum speed of any point in the string is v//10 , where v is the speed of propagation of the wave. If a = 10^(-3)m and v = 10ms^(-1) , then lambda and f are given by

KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (COMPETITIVE EXAMS)
  1. An LCR circuit is equivalent to a damped pendulum. In an LCR circuit t...

    Text Solution

    |

  2. An arc lamp requires a direct current of 10 A at 80 V to function. If ...

    Text Solution

    |

  3. For an RLC circuit driven with voltage of amplitude vm and frequency ...

    Text Solution

    |

  4. An emf of 20 V is applied at time t = 0 to a circuit containing in ser...

    Text Solution

    |

  5. An inductor of inductance L and resistance R is connected of A.C. circ...

    Text Solution

    |

  6. In an A.C circuit the current...

    Text Solution

    |

  7. A primary of transformer has 100 turns an secondary has 500 turns. If ...

    Text Solution

    |

  8. If in an A.C. circuit voltage V and current is then the power dissipat...

    Text Solution

    |

  9. In a step-down transformer ....... increases.

    Text Solution

    |

  10. The phase difference between current and voltage for L-C-R A.C. series...

    Text Solution

    |

  11. The value of capacitive reactance of capacitor XC. If the values of ca...

    Text Solution

    |

  12. When a wire loop is rotated in a magnetic field the direction of induc...

    Text Solution

    |

  13. In L-C-R circuit, the energy dissipated in …….

    Text Solution

    |

  14. The voltage of an A.C. source varies with time according to the equati...

    Text Solution

    |

  15. A L-C-R circuit connected to an A.C. source of frequency f. If current...

    Text Solution

    |

  16. A series R-C circuit is connected to an alternating voltage source. Co...

    Text Solution

    |

  17. Which of the following combinations should be selected for better tuni...

    Text Solution

    |

  18. The potential differences across the resistance, capacitance and induc...

    Text Solution

    |

  19. A small signal voltage V(t) = V0 sinomegat is applied across an ideal...

    Text Solution

    |

  20. An inductor 20 mH, a capacitor 50 muF and a resistor 40Omega are conne...

    Text Solution

    |