Explanation:
First Calculate Total Equivalent Resistance (Series) :
[tex]R_{eq} = r_{1} + r_{2} = 23 \: ohms[/tex]
(A) Current in each resistor :
[tex]I = \frac{V}{R} = 0.78 \: A[/tex]
(Since this is a series connection, the electric current is same through both resistor).
(B) Potential Difference across the first resistor :
[tex]V = IR = 0.78 \times 19 = 14.82 \: V[/tex]
(B) Potential Difference across the second resistor :
[tex]V = IR = 0.78 \times 4 = 3.12 \: V[/tex]
