Question

The internal resistances of two cells shown are 0.1 $\Omega$ and 0.3 $\Omega$. If R = 0.2 $\Omega$, find out the potential difference across the two cells.

Answer 1

$4v=(0.1+0.3+0.2)i$

$\Rightarrow i=\frac{40}{6}=\frac{20}{3}A$

Potential difference across A

$=2-0.1\times \frac{20}{3}=\frac{4}{3}V$

Potential difference across B

$=2-0.3\times \frac{20}{3}=0$