Home
Class 12
PHYSICS
An AC source of rms voltage 220 V and va...

An AC source of rms voltage 220 V and variable frequency is connected across a series combination of 5 H inductance `80 muF ` capacitance and `40 Omega` resistance . Calculate frequency which can drive the circuit to resonance. What will be the impedance of the circuit for this frequency and peak current ?

Text Solution

AI Generated Solution

To solve the problem step by step, we will follow these steps: ### Step 1: Identify the given values - RMS Voltage (V_rms) = 220 V - Inductance (L) = 5 H - Capacitance (C) = 80 µF = 80 × 10^(-6) F - Resistance (R) = 40 Ω ...
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise PRACTICE PROBLEMS|67 Videos
  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise CONCEPTUAL QUESTIONS|25 Videos
  • ATOMS

    MODERN PUBLICATION|Exercise Chapter Practice Test|16 Videos

Similar Questions

Explore conceptually related problems

A variable frequency 230 V alternating voltage source is connected across a series combination of L = 5.0 H, C = 80 mu F and R = 40 Omega (i) Calculate the angurla frequency fo the source which drives the circuitin resonance. (ii) Obtain r.m.s. the impedance of the circuit and amplitude of current at resonance frequency (iii) Obtain r.m.s. potential drop across the three elements of the circuit at resonating frequency. (iv) How do you explain the observation that the algerbraic sum of voltages across the three elements obtained is greater than the supplied voltage.

Find the resonant frequency of a series circuit consist of an inductance 200 muH , a capacitance of 0.0005muF and a resistance of 10 Omega .

A 200 V varialbe frequency a.c. source is connected to a series combination the angular C = 80 mu F and R = 40 Omega . Calculate the angular frequency of the soucre to get maximum current in the cicuit, the current amplitude at resonance and power dissipated in the circuit.

Figure here, shows a series L-C-R circuit connected to a variable frequency 230 V source. L = 5.0H, C = 80 muF and 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 L-C combination is zero at the resonating frequency.

A series LCR circuit connected to a variable frequency 230 V source has L = 5.0 H, C = 80 mu F , R = 40 Omega , Fig. (a) Determine the source frequency which drives the circuit in resonance. (b) Obtain the impedance of the circuit and amplitude of current at at resonating frequency. (c ) Determine the r.m.s. potential drops acorss the three elements the circuits. Show that the potential drop acorss the LC combination is zero at the resonating frequecny.

If resistance R = 10 Omega , inductance L = 2 mH and capacitance C = 5 muF are connected in series to an AC source of frequency 50 Hz, then at resonance the impedance of circuit is

An inductor of resistance 80 Omega is connected to an AC source of frequency 50 Hz . Calculate the inductance if the impedance of circuit is 150 Omega .

MODERN PUBLICATION-ALTERNATING CURRENT -CHAPTER PRACTICE TEST
  1. An AC source of rms voltage 220 V and variable frequency is connected ...

    Text Solution

    |

  2. Write the relation between the rms value and peak value of AC.

    Text Solution

    |

  3. Discuss the phase relationship between current and emf in an circuit c...

    Text Solution

    |

  4. In a series LCR circuit, V(L) = V(C ) != V(R ). What is the value of p...

    Text Solution

    |

  5. Why cannot a transformer be used to step up d.c. voltage ?

    Text Solution

    |

  6. Why do we prefer a choke coil to a rhestat in controlling a.c.?

    Text Solution

    |

  7. Why is electrical energy transmitted at high voltage from a distant po...

    Text Solution

    |

  8. A step down transformer converts transmission line voltage from 2200 V...

    Text Solution

    |

  9. The rms value of current in a 50 Hz AC source is 4 A. What will be the...

    Text Solution

    |

  10. An electric heater is connected to DC and AC sources of equal voltage ...

    Text Solution

    |

  11. Under which condition the current will lag behind the voltage? Explain...

    Text Solution

    |

  12. When an ac source is connected to an ideal capacitor, show that the av...

    Text Solution

    |

  13. Show that in the free oscillations of an LC circuit, the sum of energi...

    Text Solution

    |

  14. Can the voltage drop across the inductor or capacitro in a series LCR ...

    Text Solution

    |

  15. An alternating voltage given by V = 240 sin 314 t is connected across ...

    Text Solution

    |

  16. What is power factor of an LCR circuit ? Explain on the basis of power...

    Text Solution

    |

  17. (a) In a series LCR circuit connected across an AC source of varible f...

    Text Solution

    |