Home
Class 12
PHYSICS
Above graphs are for reactance versu fre...


Above graphs are for reactance versu frequency of A.C. emf's frequency. Then ......

A

Figure (1) is for inductor and figure (2) is for capacitor.

B

Figure (1) is for capacitor and figure (2) for inductor.

C

Figure (1) is for resistance and figure (2) is for capacitor.

D

Figure (1) is for inductor and figure (2) is for resistor.

Text Solution

Verified by Experts

The correct Answer is:
B

`therefore` Capacitive reactance `X_C=1/(omegaC)` and inductive reactance `X_L=omegaL`
`therefore X_C prop 1/omega " " therefore X_L prop omega`
`therefore X_C prop 1/(2piv) therefore X_L prop 2piv`
`therefore X_C prop 1/v` and `X_L prop v`
Here `X_Cv` = constant is an equation of hyperbol and so for capacitor, graph of `X_C to v` is like hyperbola given in figure (1).
Here `X_L = Kv + 0` is an equation of a straight line passing through origin and so graph of `X_L to` is like a straight line given in figure (2).
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENTS

    KUMAR PRAKASHAN|Exercise SECTION-D MCQs (COMPETITIVE EXAMS)|64 Videos
  • ALTERNATING CURRENTS

    KUMAR PRAKASHAN|Exercise SECTION-C NCERT EXEMPLAR (Long Answer)|5 Videos
  • ATOMS

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

Similar Questions

Explore conceptually related problems

The frequency of A.C. mains in India is ….. Hz.

In an A.C. circuit in 1 second current reduces to zero value 120 times. Hence the frequency of A.C. current is ...... Hz.

Figure shows the graph of stopping potential verus that frequency of a photosensitive metal. The plank's constant and work funcation of the metal are

What determined the frequency of AC produced by a generator ?

The difference in the frequency of series limit of Lyman series and frequency of Balmer series is equal to the frequency of the first line of the ...... series.

A single of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal is/are :-

A pure capacitor of capacitive reactance of 10 Omega is connected to an A.C. source. If the frequency of a source is doubled, the capacitive reactance will be ....... Omega .

Time taken from zero to maximum for an A.C. voltage of frequency 50Hz will be ......... ms.

If 8 Omega resistance and 6 Omega reactance are present in an A.C. series circuit then what will be the impedence of the circuit ?

For photo senstive surface A and B graph of stopping potential versus frequency (v) is shown in figure .From graph work function of A surface …..

KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
  1. Unit of omegaC is

    Text Solution

    |

  2. 20Omega resistance is connected to V = 220sin (100pit) voltage source...

    Text Solution

    |

  3. Above graphs are for reactance versu frequency of A.C. emf's frequency...

    Text Solution

    |

  4. The resistance of a coil for D.C. is in ohms. In A.C. the resistance ....

    Text Solution

    |

  5. A coil having inductance of 1 mH is connected to an A.C. source, its i...

    Text Solution

    |

  6. In a series D.C. circuit has core of a reactance of 8Omega and a resis...

    Text Solution

    |

  7. In an A.C. circuit of frequency 400/pi Hz is of capacitance CmuF and r...

    Text Solution

    |

  8. In an L-C-R circuit , R=sqrt7Omega, XL=11Omega and XC=8Omega , then th...

    Text Solution

    |

  9. A coil of self inductance of 1H and resistance 200Omega is connected t...

    Text Solution

    |

  10. The maximum value of an A.C. voltage coming in our houses is ………. % mo...

    Text Solution

    |

  11. The ratio of r.m.s. value of an A.C. voltage and its mean value over h...

    Text Solution

    |

  12. An alternating voltage V = 400 sin (500omegat)V is connected to a 0.2 ...

    Text Solution

    |

  13. In an A.C. circuit, resistance = 12Omega and capacitance reactance = 9...

    Text Solution

    |

  14. I"rms"= Im

    Text Solution

    |

  15. Usually in A.C. circuit ……..

    Text Solution

    |

  16. The force constant of a spring corresponds to …….. in electrical circu...

    Text Solution

    |

  17. A pure capacitor of capacitive reactance of 10Omega is connected to an...

    Text Solution

    |

  18. An L-C-R series circuit with inductor of reactance is 25 Omega, reacta...

    Text Solution

    |

  19. If 1.5 A constant current is passing through a resistance, then the va...

    Text Solution

    |

  20. An L-C-R series A.C. circuit is tuned to resonance. The impedance of t...

    Text Solution

    |