2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर

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

  • question_answer
    The e.m.f. in a thermoelectric circuit with one junction at \[0{}^\circ C\] and the other at \[t{}^\circ C\] is given by \[E=At-B{{t}^{2}}\]. The neutral temperature is then                     [AMU 1995; BCECE 2004]

    A)            \[\frac{A}{B}\]                     

    B)            \[-\frac{A}{2B}\]

    C)            \[-\frac{B}{2A}\]                 

    D)            \[\frac{A}{2B}\]

    Correct Answer: D

    Solution :

                       At neutral temperature E is maximum so            \[\frac{dE}{dt}=0\]Þ \[\frac{d}{dt}(At-B{{t}^{2}})=0\]Þ \[A-2Bt=0\]Þ \[t=\frac{A}{2B}\]


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