Question

four cells each of emf 4V and internal resistance 1 ohm are connected in parallel and the arrangement is connected with an external resistor 3.75 ohm. find the total current in the circuit.​

Answer 1

$i = \frac{e}{r + \frac{r}{n} } \\ = \frac{4}{3.75 + \frac{1}{4} } \\ = \frac{4}{ \frac{15}{4} } \\ = \frac{4 \times 4}{15} \\ = \frac{16}{15} \\ = 1.06 \: ampier$

this is the ans