Home
Class 12
PHYSICS
State the condition under which Ohm's la...

State the condition under which Ohm's law is not obeyed in a conductor.

Text Solution

Verified by Experts

A metallic conductor with changing temperature does not obey Ohm's law. The law does not hold for carbon, electrolytic substances, semiconductors etc.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise NCERT TEXTBOOK QUESTION WITH ANSWER HINT|4 Videos

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise NCERT EXEMPLAR QUESTION WITH ANSWER HINT(MCQ-1)|2 Videos

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|16 Videos

  • COMMUNICATION STSTEM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|28 Videos

  • DIFFRACTION AND POLARISATION OF LIGHT

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|27 Videos

Similar Questions

Explore conceptually related problems

State the condition under which electronic energy is considered to be negative.

Answer the following questions:State the condition under which the binomial distribution is symmetric.

State the conditions under which the work done by a force is positive or negative.

State the conditions for ideal solution.

State the condition in which a real gas behaves as an ideal gas.

State the condition under which the phenomenon of resonance occurs in series LCR circuit when ac voltage is applied. In a series LCR circuit, the current is in same phase with voltage. Calculate the value of self-inductance if the capacitor used in 20muF and resistance used in 10 ohm with the ac source of frequency 50 Hz.

State the condition under which the phenomenon of resonance occurs in series LCR circuit when ac voltage. Calculate the value of self-inductance if the capacitor used is 10 muF and resistance used iss 10 ohm with the ac source of frequency 50 Hz.

Suggest a condition under which magnesium could reduce alumina.

Predict conditions under which Al might be expected to reduce MgO .

State the modern periodic law.

CHHAYA PUBLICATION-CURRENT ELECTRICITY -HIGHER ORDER THINKING SKILL (HOTS) QUESTION
  1. Force and electromotive force are different physical quantities-explai...

    Text Solution

    |

  2. A metallic wire has a definite resistance . IF the wire is stretched i...

    Text Solution

    |

  3. A conductor in series with an ammeter and a semiconductor in series wi...

    Text Solution

    |

  4. Show that when a number of resistance are connected in parallel their...

    Text Solution

    |

  5. An electric lamp is connected with a battery of emf 10 V and it is fou...

    Text Solution

    |

  6. Show that if a resistance connected in a parallel combination is much ...

    Text Solution

    |

  7. By mistake, a voltmeter is connected in series and an ammeter in paral...

    Text Solution

    |

  8. Equal number of identical cells are joined first in series and then in...

    Text Solution

    |

  9. Two cells each of emf e but internal resistances r1 and r2 are connect...

    Text Solution

    |

  10. For n number of resistors of magnitude r connected in parallel, the ...

    Text Solution

    |

  11. A closed circuit consists of n cells connected in series. Each cell ha...

    Text Solution

    |

  12. A student connect a cell to a circuit and measures the current in the ...

    Text Solution

    |

  13. State the condition under which Ohm's law is not obeyed in a conductor...

    Text Solution

    |

  14. The current -voltage graphs for a given metallic wire at two different...

    Text Solution

    |

  15. The equivalent resistance of series ad parallel combinations of two ce...

    Text Solution

    |

  16. A resistor of 36 Omega resistance is bent in the form of a circle is s...

    Text Solution

    |

  17. Two concentric conducting spherical shells of radii a and b (where a l...

    Text Solution

    |

  18. A cylindrical conductor of length l and inner and outer radii r2 and r...

    Text Solution

    |

  19. The cross section of a cylindrical conductor is A. The resistivity of ...

    Text Solution

    |

  20. Figure shows a conductor of length l having a circular cross section. ...

    Text Solution

    |