JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Graphical Questions

  • question_answer
    Two different metals are joined end to end. One end is kept at constant temperature and the other end is heated to a very high temperature. The graph depicting the thermo e.m.f. is                                           [DCE 2000]

    A)                                       

    B)                                

    C)                                        

    D)

    Correct Answer: D

    Solution :

               \[E=\alpha \,t+\frac{1}{2}\beta \,{{t}^{2}},\] graph between E and t will be a parabola, such that first emf increases and then decreases.


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