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12th Class Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Assertion And Reason (MCQs) - Current Electricity

  • question_answer
    Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as: Assertion (A): Ohm's law is not valid, if current depends on voltage non-linearly. Reason (R): Ohm's law is a fundamental law of nature.

    A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A)        

    B) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A)

    C) Assertion (A) is true but Reason (R) is false             

    D) Assertion (A) is false and Reason (R) is also false

    Correct Answer: C

    Solution :

    (c) Ohm's law is not a fundamental law of nature. It fails in the following conditions:
    (i) voltage depends on-current non linearly.
    (ii) the relation between voltage and current depends on the sign of voltage for the same absolute value of voltage.
    (iii) the relation between voltage and current is not unique.


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