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
    ASSERTION: The peak value of voltage for an A.C. source is times the root mean square voltage.
    REASON: An electric bulb is first connected to a D.C. source and then to an A.C. source having the same voltage. Bulb glows with same brightness in both the cases.

    A) If both assertion and reason are true and reason is the correct explanation of assertion.

    B) If both assertion and reason are true and reason is not the correct explanation of assertion.

    C) If assertion is true but reason is false.

    D) If both assertion and reason are false.

    E) If assertion is false but reason is true.

    Correct Answer: C

    Solution :

    Voltage of D.C. source is constant but in A.C. peak value of voltage is \[\sqrt{2}\] times the r.m.s voltage. Hence bulb will glow with more brightness when connected to an A.C. source of the same voltage.


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