Home
Class 12
PHYSICS
The peak value of an alternating current...

The peak value of an alternating current is 5A and its frequency is 60Hz. Find its rms value. How long will the cukrgrenQt current IS 5 A and its frequency is 60 Hz. Find its runs value.

Text Solution

Verified by Experts

The rms current is
`i_(rms) = i_0/sqrt(2) = 3.5 A`.
The time period is
`T = 1/v = 1/60 s`.
The current takes one fourth of the time period to reach the peak value starting from zero. Thus, the time required is
`t = T/4 = 1/240 s`.
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    HC VERMA|Exercise Worked Out Examples|8 Videos

  • ALTERNATING CURRENT

    HC VERMA|Exercise Short Answer|14 Videos

  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Exercises|46 Videos

Similar Questions

Explore conceptually related problems

The peak value of an alternating current is 5 A and its frequency is 60 Hz. Find its rms value and time taken to reach the peak value of current starting from zero.

The frequency of an alternating voltage is 50 cycles/s and its amplitude is 120 V. Then what is the rms value of voltage ?

Calculate the peak value of current if the crest factor is 10 and the rms value is 2A.

The sides of a triangular plot are in the ratio of 3 : 5 : 7 and its perimeter is 300 m. Find its area.

How many times in one second does an AC with frequency 50Hz change its direction ?

Find the time required for a 50Hz alternating current to become its value from zero to the rms value.

If the sum of n terms of an A.P. is 3n^2 + 5n and its m^("th") term is 164, find the value of m .

In a circuit, the value of the alternating current is measured by hot wire ammeter as 10 ampere. What will be its peak value ?

HC VERMA-ALTERNATING CURRENT-Exercises
  1. The peak value of an alternating current is 5A and its frequency is 60...

    Text Solution

    |

  2. Find the time required for a 50Hz alternating current to become its va...

    Text Solution

    |

  3. The household supply of electricity is at 220 V (rms value) and 50 Hz....

    Text Solution

    |

  4. A bulb rated 60 W at 220 V is connected across a household supply of a...

    Text Solution

    |

  5. An electric bulb is designed to operate at 12 v DC. If this bulb is c...

    Text Solution

    |

  6. The peak power consumed by a resistive coil when connected to an AC so...

    Text Solution

    |

  7. The dielectric strength of air is 3.0 xx 10^6 V/m. A parallel-plate ai...

    Text Solution

    |

  8. The electric current in a circuit is given by I = i0 (t/(tau)) for som...

    Text Solution

    |

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

    Text Solution

    |

  10. A coil of inductance 5.0 mH and negligible resistance is connected to ...

    Text Solution

    |

  11. A coil has a resistance of 10 Omega and an inductance of 0.4 henry. It...

    Text Solution

    |

  12. A resistor of resistance 100 Omega is connected to an AC source epsilo...

    Text Solution

    |

  13. In a series RC circuit with an AC source, R = 300 Omega, C = 25 muF, e...

    Text Solution

    |

  14. An electric bulb is designed to consume 55 W when operated at 110 volt...

    Text Solution

    |

  15. In a series LCR circuit with an AC source, R = 300 Omega, C = 20 muF, ...

    Text Solution

    |

  16. Consider the situation of the previous problem. Find the average elect...

    Text Solution

    |

  17. An inductance of 2.0 H, a capacitance of 18 muF and a resistance of 10...

    Text Solution

    |

  18. A coil a capacitor and an AC source of rms voltage 24 V are connected ...

    Text Solution

    |

  19. Figure shows a typical circuit for low-pass filter. An AC input Vi = 1...

    Text Solution

    |

  20. A transformer has 50 turns in the primary and 100 in the secondary. If...

    Text Solution

    |