Home
Class 12
PHYSICS
A capacitor has a reactance of 100 Omega...

A capacitor has a reactance of `100 Omega` at 50 Hz Whatt will be its reactance at 125 Hz ?

Text Solution

Verified by Experts

Here, `X_(C ) = 100 Omega, v = 50 Hz`
`X'_(C ) = ?` `v = 125 Hz`
As `X_(C ) prop (1)/(v) :. (X'_(C ))/(X_(C )) = (v)/(v') = (50)/(125) = 0.4`,
`X'_(C ) = 0.4 X_(C ) = 40 Omega`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise JEE Mains Ad..(Multiple Choice Question)|1 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Multiple Choice Questions|1 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Value Based Questions|2 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Exercise|191 Videos

  • ELECTROMAGNETIC WAVES

    PRADEEP|Exercise II Focus multiple choice question|5 Videos

Similar Questions

Explore conceptually related problems

The reactance of capacitor at 50Hz is 10Omega . What will be its reactance at 200Hz ?

(a) What is the reactance of a 2.00 H inductor at a frequency of 50.0 Hz ? (b) What is the inductance of an inductor whose reactance is 2.00 Omega at 50.0 Hz ? (c) What is the reactance of a 2.00 muF capacitor at a frequency of 50.0 Hz ? (d) What is the capacitance of a capacitor whose reactance is 2.00 Omega at 50.0 Hz ?

A capacitor has a capacitance of (2)/(pi) mu F . Calculate its reactance at a frequency of (i) 100 Hz and (ii) 10^(4) Hz.

The reactance offered by a capcitor to an a.c. of frequency 50 Hz is 15 Omega . What would be its reactance if the frequency is increased to 75 Hz?

A 1.5 mu F capacitor has a capacitative reactance of 12 Omega . What is the frequency of the source ? If frequency of source is double, what will be the capacitative reactance ?

A circuit has a resistance of 11 Omega , an inductive reactance of 25 Omega , and a capacitive resistance of 18 Omega . It is connected to an AC source of 260 V and 50 Hz . The current through the circuit (in amperes) is

A circuit has three elements, a resistance fo 11 Omega , a coil of inductaive reactance 120 Omega and a capacitve reactance of 120 Omega in series and connected to an A.C source of 110 V, 60 Hz . Which of the three elements have minimum potential difference?

A coil has reactance of 100Omega when frequency is 50Hz. If the frequency becomes 150Hz, then the reactance will be –

A 50 Omega resistor is connected in series with an inductor of 0.2 H and capacitor with capacitive reactance 40 Omega . The combination is further connected to an AC source 180 V , 50 Hz. What will be the phase angle between current and voltage ? Also find the value of rms current in circuit.

PRADEEP-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-Exercise
  1. Alternating e.m.f. of E = 220 sin 100 pi t is applied to a circuit con...

    Text Solution

    |

  2. An inductance of negligible resistance, whose reactance is 22 ohm at 2...

    Text Solution

    |

  3. A capacitor has a reactance of 100 Omega at 50 Hz Whatt will be its re...

    Text Solution

    |

  4. A capacitor of capacitance 10 muF is connected to an oscillator giving...

    Text Solution

    |

  5. A 10 mu F capacitor is conneted with 1 henry inductance in series with...

    Text Solution

    |

  6. A 3 mu F capacitor is connected to a 220 V, 50 Hz a.c. source. Calcul...

    Text Solution

    |

  7. A capacitor of 10 mu F is connected to an a.c. source of e.m.f. E = 22...

    Text Solution

    |

  8. A current of 30 mA is taken by a 4 mu F capacitor connected acorss an...

    Text Solution

    |

  9. A 30 mu F capacitor is conneted to a 220 V, 50 Hz. Source. Find its ca...

    Text Solution

    |

  10. A 9//(100 pi) H inductor and a 12 Omega resistance are connected in se...

    Text Solution

    |

  11. An e.m.f. E = 200 sin 377 t volt is applied across an inductance L hav...

    Text Solution

    |

  12. The impedance of a coil is 141.4 ohm at 50 hertz and its resistance is...

    Text Solution

    |

  13. A coil takes a current of 2.0 ampere and 200 watt power from an altern...

    Text Solution

    |

  14. When 100 V dc is applied across a coil, a current of 1A flows through ...

    Text Solution

    |

  15. When a series combination of inductance and resistance are conneted wi...

    Text Solution

    |

  16. A 80 V - 800 W heater is to be operated on a 100 V - 50 Hz a.c. supply...

    Text Solution

    |

  17. The inductance of a resistance coil is 0.5. henry. How much potential ...

    Text Solution

    |

  18. An a.c. voltage of 100 V, 50 Hz is connected across a 20 ohm resistor ...

    Text Solution

    |

  19. A coil of inductance 0.50H and resistance 100 Omega is connected to a ...

    Text Solution

    |

  20. In a series RC circuit, R = 30 ohm, C = 0.25 mu F, V = 100 V, omega = ...

    Text Solution

    |