question_answer

Two batteries of emf \[{{\varepsilon }_{1}}\] and \[{{\varepsilon }_{2}}({{\varepsilon }_{2}}>{{\varepsilon }_{1}})\] and internal resistances \[{{r}_{1}}\] and \[{{r}_{2}}\] respectively are connected in parallel as shown in figure.                                                                                                   (NCERT EXEMPLAR)

A) The equivalent emf \[{{\varepsilon }_{eq}}\] of the two cells is between \[{{\varepsilon }_{1}}\] and \[{{\varepsilon }_{2}}\], i.e., \[{{\varepsilon }_{1}}<{{\varepsilon }_{eq}}<{{\varepsilon }_{2}}\]

B) The equivalent emf \[{{\varepsilon }_{eq}}\] is smaller than \[{{\varepsilon }_{1}}\]

C) The \[{{\varepsilon }_{eq}}\] is given by \[{{\varepsilon }_{eq}}={{\varepsilon }_{1}}+{{\varepsilon }_{2}}\] always

D) \[{{\varepsilon }_{eq}}\] is independent of internal resistances \[{{r}_{1}}\] and \[{{r}_{2}}\]