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

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

A

A.C. cannot pass through D.C. ammeter

B

average value of complete cycle is zero

C

A.C. is virtual

D

A.C. changes its direction

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise CRITICAL THINKING|84 Videos

  • ELASTICITY

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos

  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 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

TARGET PUBLICATION-ELECTROMAGNETIC INDUCTION-COMPETITIVE THINKING
  1. A coil has 2000 turns and area of 70cm^(2). The magnetic field perpen...

    Text Solution

    |

  2. In a region of uniform magnetic induction B=10^(2) tesla, a circular c...

    Text Solution

    |

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

    Text Solution

    |

  4. If E(0) represents the peak value of the voltage in an ac circuit, the...

    Text Solution

    |

  5. The rms value of current in a 50Hz AC circuit is 6A. The average value...

    Text Solution

    |

  6. An alternating voltage E=200sqrt(2) sin (100 t)V is connected to a 1 m...

    Text Solution

    |

  7. A capacitor of capacitance 10muF is connected to an AC source and an A...

    Text Solution

    |

  8. The frequency of ac mains in India is

    Text Solution

    |

  9. The ratio of peak value and r.m.s value of an alternating current is

    Text Solution

    |

  10. An alternating e.m.f. given by e=200 sin 50 t is applied to a circuit ...

    Text Solution

    |

  11. If instantaneous current is given by i=4 cos(omega t + varphi) amperes...

    Text Solution

    |

  12. For an A.C. given by I=50cos(100t+45^(@))A. The value of I(rms)=A.

    Text Solution

    |

  13. A multimeter reads a voltage of a certain A.C. source as 100V. What is...

    Text Solution

    |

  14. The number of turns in the coil of an A.C. generator is 100 and its cr...

    Text Solution

    |

  15. In an AC circuit, peak value of voltage is 423 volts. Its effective vo...

    Text Solution

    |

  16. A generator produces a time varying voltage given by V=240 sin 120 t, ...

    Text Solution

    |

  17. An e.m.f. E=4cos(1000t)volt is applied to an LR circuit of inductance ...

    Text Solution

    |

  18. An AC generator produced an output voltage E=170sin 377t volts , where...

    Text Solution

    |

  19. A.C. voltmeter is connected to a source of e(0)=141.4 volt, then it wi...

    Text Solution

    |

  20. An alternating voltage E=200sqrt(2)sin(100t) is connected to a 1 micro...

    Text Solution

    |