Home
Class 12
PHYSICS
In a heating arrangement , an alternatin...

In a heating arrangement , an alternating current having a peak value of 28 A is used . To produce the same heat energy , If the constant current is used, its magnitude must be

A

about 14 A

B

about 28 A

C

about 20 A

D

cannot say

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - II|8 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos

Similar Questions

Explore conceptually related problems

An alternating current having peak value 14 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where i is

An alternating current having peak value 14 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where i is

The peak value of an alternating current is 10. A. Find its rms value

A direct current of 2 A and an alternating current having a maximum value of 2 A flow through two identical resistances. The ratio of heat produced in the two resistances will be

A direct current of 2 A and an alternating current having a maximum value of 2 A flow through two identical resistances. The ratio of heat produced in the two resistances will be

A direct current of 2 A and an alternating current having a maximum value of 2 A flow through two identical resistances. The ratio of heat produced in the two resistances will be

The peak value of Alternating current is 6 amp, then r.m.s. value of current will be

The alternating current in a circuit is given by I = 50sin314t . The peak value and frequency of the current are

Avarage value of current for half wave rectifier having peak value of current I_0 is

What is the r.m.s. value of an alternating current which when passed through a resistor produces heat which is thrice of that produced by a direct current of 2 amperes in the same resistor?

AAKASH SERIES-ALTERNATING CURRENT-EXERCISE - III
  1. If the alternating current I=I(1)cosomegat+I(2) sinomegat, then the rm...

    Text Solution

    |

  2. In a heating arrangement , an alternating current having a peak value ...

    Text Solution

    |

  3. In an AC circuit, the applied potential difference and the current flo...

    Text Solution

    |

  4. The instantaneous values of alternating current and voltages in a circ...

    Text Solution

    |

  5. An ideal choke takes a current of 10 A when connected to an ac supply ...

    Text Solution

    |

  6. An ideal choke takes a current of 8A when connected to an a.c. source ...

    Text Solution

    |

  7. When 100 V DC is applied across a solenoid , a current of 1 A flows in...

    Text Solution

    |

  8. In an L-R circuit, the inductive reactance is equal to the resistance ...

    Text Solution

    |

  9. An alternating voltage E = 200sqrt 2sin(100t) is connected to a muF ca...

    Text Solution

    |

  10. At a frequency omega(0) the reactance of a certain capacitor equal tha...

    Text Solution

    |

  11. An L-C-R series circuit consists of a resistance of 10 Omega a capacit...

    Text Solution

    |

  12. An L-C-R seriescircuit with a resistance of 100Omega connected to an A...

    Text Solution

    |

  13. An electric lamp designed for operation on 110 V AC is connected to a ...

    Text Solution

    |

  14. In a series LCR circuit the frequency of a 10 V, AC voltage source is ...

    Text Solution

    |

  15. A circuit draws 330 W from a 110 V , 60 Hz AC line. The power factor i...

    Text Solution

    |

  16. The natural frequency of an L-C circuit is 125000 cycles/s. When a die...

    Text Solution

    |

  17. The self inductance of the motor of an electric fan is 10 H. In order ...

    Text Solution

    |

  18. In an oscillating L-C circuit, the maximum charge on the capacitor is ...

    Text Solution

    |

  19. Powre dissipated in an LCR series circuit connected to an ac source of...

    Text Solution

    |

  20. Which of the following combination should be selected for better tunin...

    Text Solution

    |