Home
Class 12
PHYSICS
A 20muF capacitor is charged to 30 V of ...

A `20muF` capacitor is charged to 30 V of potential. The battery is then disconnected and a 200 mH of coil is connected across it, so that LC oscillations are set up. Calculate the frequency of the oscillations are set up. Calculate the frequecy of the oscillatios set up and the maxium current in the coil.

Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENTS

    MODERN PUBLICATION|Exercise EXERCISE|201 Videos

  • CAPACITOR

    MODERN PUBLICATION|Exercise EXAMPLE|262 Videos

Similar Questions

Explore conceptually related problems

A charged 30 muF capacitor is connected to a 27 mH inductor. What is the angular frequency of free oscillations of the circuit?

A capacitor of 2muF is charged to 20 V and then uddelny short-circuited by a coil of negligible resistance and of inducrtane 8 mu H .Calculate the frequency of the resulting current

A 10 mu F capacitors is charged by a 30 V d.c supply and then connected across an uncharged 50 mu F capacitor. Calculate (i) the final potential diff. across the combinition

A capacitor of 2muF is charged to 20 V and then uddelny short-circuited by a coil of negligible resistance and of inducrtane 8 mu H .Calculate the maximum amplitude of oscillating current will be

A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an a.c. source of 200 V, 100 hz is connected across the coil, the current in the coil? Find the current of the coil

An inductor 200 mH, capacitor 500muF , resistor 10Omega are connected in series with a 100V, variable frequency a.c. source. Calculate the frequency at which the power factor of the circuit is unity.

An a.c. source of 200 V, 50Hz is connected across a 300Omega resistor and capacitor of 25/pi muF in series. Calculate (a) reactance: current in the circuit.

MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
  1. A 20muF capacitor is charged to 30 V of potential. The battery is then...

    Text Solution

    |

  2. A lamp is connected in series with a capacitor to a high frequency a.c...

    Text Solution

    |

  3. An air core coil and an electric bulb are connected in series across a...

    Text Solution

    |

  4. Answer the following questions: A choke coil in series with a lamp is ...

    Text Solution

    |

  5. A lamp is connected in series with a capacitor. What will happen if d....

    Text Solution

    |

  6. Explain : voltages across L and C in series are 180^(@) out of phase, ...

    Text Solution

    |

  7. The total impedance of a circuit decreases, when a capacitor is added ...

    Text Solution

    |

  8. When an a.. Circuit with a series combination of inductance, capacitan...

    Text Solution

    |

  9. When a capacitor is connected in series LR circuit the alternating cur...

    Text Solution

    |

  10. An alternating voltage of frequency f is applied across LCR circuit. L...

    Text Solution

    |

  11. An alternating voltage of frequency f is applied across LCR circuit. L...

    Text Solution

    |

  12. Give applications of resonance in series LCR circuit.

    Text Solution

    |

  13. An capacitor C, a variable resistor R and a bulb B are connected in se...

    Text Solution

    |

  14. An capacitor C, a variable resistor R and a bulb B are connected in se...

    Text Solution

    |

  15. A capacitor with capacitance C and a coil with active resistance R and...

    Text Solution

    |

  16. An inductor L of inductance X(L) is connected in series with a bulb B ...

    Text Solution

    |

  17. An inductor L of inductance X(L) is connected in series with a bulb B ...

    Text Solution

    |

  18. As shown in figure an electric lamp having coil of negligible inductan...

    Text Solution

    |

  19. As shown in figure an electric lamp having coil of negligible inductan...

    Text Solution

    |

  20. In the circuit shown below R represents an electric bulb. If the frequ...

    Text Solution

    |

  21. Show in the figure, two electric circuits A and B. Calculate the ratio...

    Text Solution

    |