Home
Class 12
PHYSICS
Is Ohm's law universally applicable for ...

Is Ohm's law universally applicable for all condcuting elements? If not, give examples of elements which do not obey Ohm's law.

Text Solution

Verified by Experts

No. Examples of non-ohmic elements, vacuum diode, semiconductor diode.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE (VERY ANSWER QUESTIONS) (Choose the correct alternative)|2 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-1)|15 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE (SHORT ANSWER QUESTIONS)|1 Videos

  • COMMUNICATION SYSTEMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE (TV Antenna)|16 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - III|73 Videos

Similar Questions

Explore conceptually related problems

Answer the following questions: (a) A steady current flows in a metallic conductor of non-uniform cross-section. Which of these quantities is constant along the conductor: current, current density electric field, drift speed ? (b) Is Ohm's law universally applicable for all cnducting elements ? If not, give examples of elements which do not obey Ohm's law. (c ) A low voltage suply from which one needs high currents must have very low internal resistance.Why (d) A high tension (HT) supply of say, 6kV must have a very large internal resistance, Why ?

Ohm's law is not applicable for

Ohm's law is applicable to

Which elements are examples of Noble gases?

What are transition elements ? Give examples.

Explain Ohm's law.

Define element and compound. Give examples.

Show that the semi conductor do not obey Ohm's Law.

AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE (VERY ANSWER QUESTIONS)
  1. What is temperature coefficient of resistivity? What are its units?

    Text Solution

    |

  2. Is Ohm's law a fundamental law?

    Text Solution

    |

  3. What is an ideal cell?

    Text Solution

    |

  4. What is the terminal voltage of a cell ? When it will be equal to the ...

    Text Solution

    |

  5. When a cell is charged by sending current into the cell, what will be ...

    Text Solution

    |

  6. What are good conductors? Give examples.

    Text Solution

    |

  7. Which of the two, namely voltmeter and potentiometer is preferable to ...

    Text Solution

    |

  8. Define kilowatt-hour unit of energy.

    Text Solution

    |

  9. On what conservation principles the first and the second laws of Kirch...

    Text Solution

    |

  10. What is the advantage of a meter bridge over a Wheatstone bridge?

    Text Solution

    |

  11. What is the principle of potentiometer?

    Text Solution

    |

  12. When is the series combination of cells advantageous and why?

    Text Solution

    |

  13. When is the parallel combination of cells advantageous and why?

    Text Solution

    |

  14. What are the advantages of using a potentiometer?

    Text Solution

    |

  15. "Electrons alone are the current carriers in conductors". Explain whet...

    Text Solution

    |

  16. What conclusion can you draw from the following observation on a resis...

    Text Solution

    |

  17. A steady current flows in a metallic conductor of non-uniform cross-se...

    Text Solution

    |

  18. Is Ohm's law universally applicable for all condcuting elements? If no...

    Text Solution

    |

  19. A low voltage supply from which one needs high currents must have very...

    Text Solution

    |

  20. A high tension (HT) supply of, say, 6kV must have a very large interna...

    Text Solution

    |