Question

Two cells of e.m.f. 10$V\&15V$ are connected in parallel to each other between points A $\&B$ .The cell of e.m.f. 10$V$ is ideal but the cell of e.m.f. 15$V$ has internal resistance 1$\Omega$ . The equivalent e.m.f. between $A$ and $B$ is:

• A. $\frac{25}{2}V$
• B. not defined
• C. 15$V$
• D. 10$V$

Answer 1

The correct option is D 10$V$