Home
Class 12
PHYSICS
Alternating current can not be measured ...

Alternating current can not be measured by D.C. Ammeter because

A

Average value of current for current for complete cycle is zero

B

AC changes direction

C

A.C can not pass through D.C Ammeter will get damaged.

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
(a) D.C. Ammeter measure average current in AC current, average current is zero for complete cycle. Hence reading will be zero.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    SUNIL BATRA (41 YEARS IITJEE PHYSICS)|Exercise JEE Main And Advanced|129 Videos

  • ELECTROSTATICS

    SUNIL BATRA (41 YEARS IITJEE PHYSICS)|Exercise Comprehension Based Questions|2 Videos

Similar Questions

Explore conceptually related problems

Alternating currents can be produced by a

Alternating current can be produced by

Alternating current can be measured with the help of

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

A galvanometer of resistance 50Omega is converted into an ammeter by connecting a low resistance (shunt) of value 1Omega in parallel to the galvanometer, S. If full - scale deflection current of the galvanometer is 10 mA, then the maximum current that can be measured by the ammeter is -

An ammeter consists of a galvanometer of a resistance 45 Omega shunted with a resistance of 3 Omega . If the current rating of that can be measured by the ammeter will be

SUNIL BATRA (41 YEARS IITJEE PHYSICS)-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-JEE Main And Advanced
  1. In an oscillating LC circuit the maximum charge on the capacitor is Q....

    Text Solution

    |

  2. The core of any transformaer is laminated so as to

    Text Solution

    |

  3. Alternating current can not be measured by D.C. Ammeter because

    Text Solution

    |

  4. In an LCR series a.c. Circuit the voltage across each of hte component...

    Text Solution

    |

  5. A coil having n turns and resistance R Omega is connected with a galva...

    Text Solution

    |

  6. In a uniform magneitc field of induced B a wire in the form of a semic...

    Text Solution

    |

  7. in a LCR circuit capacitance is chagned from C to 2C. For the resomat ...

    Text Solution

    |

  8. A metal conductor of length 1m rotates vertically about one of its end...

    Text Solution

    |

  9. One conducting U tube can slide inside another as shown in figure, mai...

    Text Solution

    |

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

    Text Solution

    |

  11. The phase diffenernce between the alternating current and emf is (pi)/...

    Text Solution

    |

  12. A circuit has a resistance of 12 ohm and an impendance of 15 ohm. The ...

    Text Solution

    |

  13. A coil of inductance 300mH and resistance 2 Omega. The current reaches...

    Text Solution

    |

  14. Which of the following units denotes the dimension (ML^(2))/(Q^(2)), w...

    Text Solution

    |

  15. In a series resonant LCR circuit the voltage across R is 100 volts and...

    Text Solution

    |

  16. In an AC generator, a coil with N turns, all of the same area A and to...

    Text Solution

    |

  17. The flux linked with a coil at any instant 't' is given by phi = 10t^(...

    Text Solution

    |

  18. An inductor (L = 100 mH), a resistor (R = 100 (Omega)) and a battery (...

    Text Solution

    |

  19. In an a.c. Circuit the voltage applied is E=E(0) sin (omega)t. The res...

    Text Solution

    |

  20. An ideal coil of 10H is connected in series with a resistance of 5(Ome...

    Text Solution

    |