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

  • question_answer
    If in a voltaic cell 5 gm of zinc is consumed, then we get how many ampere hours ? (Given that E.C.E. of Zn is \[3.387\times {{10}^{-7}}\] kg/coulomb)

    A)                    2.05                                  

    B)                    8.2

    C)                    4.1                                    

    D)                    \[5\times 3.387\times {{10}^{-7}}\]

    Correct Answer: C

    Solution :

               \[m=Zi\,t=Zq\]; \[q=\frac{5\times {{10}^{-3}}}{3.387\times {{10}^{-7}}}amp\text{-}sec\] or \[q=\frac{5\times {{10}^{-3}}}{3.387\times {{10}^{-7}}\times 3600}amp\text{-}hr=4.1\]


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