Home
Class 12
PHYSICS
In an A.C. circuit in 1 second current r...

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

A

50

B

100

C

60

D

120

Text Solution

Verified by Experts

The correct Answer is:
C
In a one frequency, the value of current becomes two times zero.
In 1s if the value of current becomes 120 times zero then its frequency would be f = 60Hz.
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 the current...

In an A.C. circuit the inductive reactance is defined as ......

If in an A.C. circuit voltage V and current is then the power dissipated in the circuit is …….

In A.C. circuit having only capacitor, the current ......

Usually in A.C. circuit ……..

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

In an a.c. circuit containing an inductor of zero resistance, the emf of the applied A.C. voltage leads the current by ………

In A.C. circuit having only capacitor, the current_______

KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
  1. The value of capacitive reactance is given by ……

    Text Solution

    |

  2. Impedance in L-C-R series circuit is a ……... number. Its value is give...

    Text Solution

    |

  3. In an A.C. circuit in 1 second current reduces to zero value 120 times...

    Text Solution

    |

  4. The displacement in Newton law corresponds to …... is electrical quant...

    Text Solution

    |

  5. Which of the following gives a correct correspondence between electric...

    Text Solution

    |

  6. Which of the following does give a correct correspondence between an e...

    Text Solution

    |

  7. On decreasing the angular frequency of A.C. source used in L-C-R serie...

    Text Solution

    |

  8. When does the impedance of a series L-C-R (AC) circuit become minimum ...

    Text Solution

    |

  9. Current of 50/pi Hz frequency is passing through an A.C. circuit havin...

    Text Solution

    |

  10. An alternating voltage given as V=200sqrt2sin (100t)V is applied to a ...

    Text Solution

    |

  11. A coil of inductance L and resistance R is connected to an A.C. source...

    Text Solution

    |

  12. One inductor (of inductance L henry) is connected to an A.C. source, t...

    Text Solution

    |

  13. If angular frequency of an A.C. source used in L-C-R circuit is decrea...

    Text Solution

    |

  14. If angular frequency of an A.C. source used in L-C-R circuit is increa...

    Text Solution

    |

  15. The force constant corresponds to …... electric quantity.

    Text Solution

    |

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

    Text Solution

    |

  17. The reactance of a capacitor of 1/pi in are A.C. circuit having frequ...

    Text Solution

    |

  18. An LCR series circuit with L =0.5H, C=10xx10^(-6) F, R=100 Omega is c...

    Text Solution

    |

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

    Text Solution

    |

  20. Capacitive reactance of a capacitor for a D.C. circuit is.......

    Text Solution

    |