Question

What is the potential drop between points $A$ and $C$ in the following circuit? Resistances $1 \omega$ and $2 \omega$ are represent the internal resistance of the respective cells.

• A. 1.75 V
• B. 2.25 V
• C. $\frac{5}{4} V$
• D. $\frac{4}{5} V$

Answer 1

Answer: (B)

2.25 V

Answer 2

Emf's $E_1$ and $E_2$ are opposing each other. Since,