Home
Class 12
PHYSICS
Assertion: The division are equaly marke...

Assertion: The division are equaly marked on the scale of `AC` ammeter.
Reason: Heat produced is directely proportional to the current

A

If both the assertion and reason are true and reason is a true explantion of the assertion.

B

If both the assertion and reason are true but the reason is not true the correct explantion of the assertion.

C

If the assertion is true but reason false

D

If both the assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
An `AC` ammeter is consturcted on the basics of heating effect of the electric current. Since heat produced varies as square of current `(H=I^(2)R)`. Therefore the division marked on the scale of `AC` ammeter are not equally spaced.
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    A2Z|Exercise AIPMT/NEET Questions|31 Videos

  • ALTERNATING CURRENT

    A2Z|Exercise AIIMS Questions|26 Videos

  • ALTERNATING CURRENT

    A2Z|Exercise Problems Based On Mixed Concepts|40 Videos

  • ATOMIC PHYSICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

The heat developed in a system is proportional to the current through it.

Assertion : A screw gauge having a smaller value of pitch has greater accuracy. Reason : The least count of screw gauge is directly proportional to the number of divisions on circular scale.

Heat Produced By An Electric Current

Assertion: If the frequency of alternating current in an AC is circuit consisting of an inductance coil is increased then current gets decreased. Reason: The current is inversely proportional to frequency of alternating current.

If an AC ammeter reads I A in an AC circuit, then the peak value of the current is

Assertion : Bodies radiate heat at all temperatures. Reason : Rate of radiation of heat is proportional to the fourth power of absolute temperature.

Assertion : Higher the range, greater is the resistance of ammeter. Reason : To increase the range of ammeter, additional shunt needs to be used across it.

A2Z-ALTERNATING CURRENT-Section B - Assertion Reasoning
  1. Assertion: AC generators are based upon EMI principle. Reason: Resis...

    Text Solution

    |

  2. Assertion: Rate of heat generated when resistance is connected with AC...

    Text Solution

    |

  3. An inductor, a capacitor, and a resistor are connected in series. The ...

    Text Solution

    |

  4. Asserition: In alternating current direction of motion free electron c...

    Text Solution

    |

  5. Assertion: When frequency is greater than resonace frequency is a seri...

    Text Solution

    |

  6. Assertion: When capacitive reactance is smaler than the inductive reac...

    Text Solution

    |

  7. Statement 1: An alternating current shown magnetic effect. Statemen...

    Text Solution

    |

  8. Assertion: The alternating current lags behined the e.m.f. by a phase ...

    Text Solution

    |

  9. Assertion: Capacitance serves as a block for DC and offers an easy pat...

    Text Solution

    |

  10. Assertion: When capacitive reactance is smaler than the inductive reac...

    Text Solution

    |

  11. Assertion: Chock coil is the prefered over a resistor to adjust curren...

    Text Solution

    |

  12. Statement 1: An alternating current shown magnetic effect. Statemen...

    Text Solution

    |

  13. Statement 1: Both dc and ac can be measured by a hot wire instrument. ...

    Text Solution

    |

  14. Assertion: AC is more dangerous than DC Reason: Frequency of AC is ...

    Text Solution

    |

  15. Assertion: Average value of AC over a complete cycle is always zero. ...

    Text Solution

    |

  16. Assertion: The division are equaly marked on the scale of AC ammeter. ...

    Text Solution

    |

  17. Assertion: When AC circuit contain resistor only, its power is minimum...

    Text Solution

    |

  18. Assertion: An electric lamp connected in series with a variable capaci...

    Text Solution

    |

  19. Assertion: An inductance and a resistance are connected in series with...

    Text Solution

    |

  20. Assertion: A capacitor of suitable capacitance can be used in an AC ci...

    Text Solution

    |