From the given circuit
Find
(i) Equivalent emf
(ii) Equivalent internal resistance
(iii) Total current (I)
(iv) Potential difference across each cell
(v) Current from each cell

Explanation

(i) Equivalent emf `xi_(eq)=5V`
(ii) Equivalent internal resistance,
`R_(eq)=(r )/(n)=(0.5)/(4)=0.125Omega `
(iii) Total current, `I=(xi)/(R+r//n) rArr I=(5)/(10+0.125)=(5)/(10.125)`
`rArr I=0.5A`
(iv) Potential difference across each cell, `V=IR=0.5xx10=5V`
(v) Current from each cell,
`I.=(I)/(n) rArr I.=(0.5)/(4)=0.125A`