Find the voltage drop across a 13Ω resistor.

Correct option is B

​$$\text{Current in the circuit is given by:}\\I = \frac{40}{13+7} = 2 \, \text{A}\\\text{Now, voltage across any 13 } \Omega \text{ resistor is given by:}\\V = 2 \times 13 = 26 \, \text{volts}$$​​