A) \[5:1\]
B) \[5:4\]
C) \[3:4\]
D) \[3:2\]
Correct Answer: D
Solution :
When two cells are connected in series i.e., \[{{E}_{1}}+{{E}_{2}}\]the balance point is at\[50\text{ }cm\]. And when two cells are connected in opposite direction i.e., \[{{E}_{1}}-{{E}_{2}}\] the balance point is at\[10\text{ }cm\]. According to principle of potential \[\frac{{{E}_{1}}+{{E}_{2}}}{{{E}_{1}}-{{E}_{2}}}=\frac{50}{10}\,\,\,\,\,\Rightarrow \,\,\,\,\,\,\frac{{{E}_{1}}}{{{E}_{2}}}=\frac{3}{2}\]
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