Two batteries of emf ε1 and ε2 (ε2 > ε1) and internal resistances r1 and r2 respectively are connected in parallel as shown.
And are in parallel connection.
The equivalent emf will be
The equivalent emf depends on the and . So option D. is wrong.
Equivalent emf is not equal to ε1 + ε2. So option C. is wrong.
From the above equation is can’t be smaller than ε1. So option B. also wrong
So option A. is the correct answer.