question_answer

The following observations were taken while comparing the e.m.f s of two primary cells using a potentiometer. Balance point when \[{{E}_{1}}\] (Leclanche cell) in the circuit (\[{{\ell }_{1}}\]in cm) \[=350\] Balance point when \[{{E}_{2}}\] (Daniel cell) is the circuit (\[{{\ell }_{2}}\] in cm) \[=275\] The ratio \[({{E}_{1}}/{{E}_{2}})\] of emfs is approximately

A)  \[1.30\]                        

B)  \[1.17\]

C)  \[1.27\]                        

D)  \[1.5\]