question_answer

Two voltameters, one of copper and another of silver, are joined in parallel. When a total charge q flows through the voltameters, equal amount of metals are deposited. If the electrochemical equivalents of copper and silver are\[{{z}_{1}}\]and\[{{z}_{2}}\]respectively, the charge which flows through the silver voltameter is     AIEEE  Solved  Paper-2005

A) \[\frac{q}{1+\frac{{{z}_{1}}}{{{z}_{2}}}}\]  

B)                                        \[\frac{q}{1+\frac{{{z}_{2}}}{{{z}_{1}}}}\]             

C)        \[q\frac{{{z}_{1}}}{{{z}_{2}}}\]                   

D)        \[q\frac{{{z}_{2}}}{{{z}_{1}}}\]

Correct Answer: B

Solution :

We know where,amount of metal deposited chemical equivalent charge            Now, the total charge,