Question

In the figure shown, battery 1 has $emf=6V$ and internal resistance $=$ 1 $\Omega$.
Battery 2 has emf $=$ 2V and internal resistance $=$ 3 $\Omega$. The wires have
negligible resistance. What is the potential difference across the terminals
of battery 2 ?

• A. 4 V
• B. 1.5 V
• C. 5 V
• D. 0.5 V

Answer 1

The correct option is C 5 V

Applying $KVL$ in the given loop.

$⟹-V_2+3I+V_1+I=0$

$⟹-2+6+4I=0$

$I=\frac{-4}{4}=1$

Now potential difference across terminal of battery $2$ is $C_2$

$C_2=V_2-3I=2-3(-1)=5V$