JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Electric Conduction Ohms and Resistance

  • question_answer
    On increasing the temperature of a conductor, its resistance increases because                                                [CPMT 1982]

    A)                    Relaxation time decreases

    B)                    Mass of the electrons increases

    C)                    Electron density decreases

    D)                    None of the above

    Correct Answer: A

    Solution :

                 Resistance of conductor depends upon relation as \[R\propto \frac{1}{\tau }\]. With rise in temperature rms speed of free electron inside the conductor increase, so relaxation time decrease and hence resistance increases


You need to login to perform this action.
You will be redirected in 3 sec spinner