a. What is the potential difference across the 10 ohm resistor in the figure?

b. What is the potential diffrence across the 20 ohm resistor in the figure?

### Answer

Using voltage divider rule for the simple series connection:

`V_{10}=\frac{10}{10+20} * 15=5 V`

`V_{20}=\frac{20}{10+20} * 15=10 \mathrm{~V}`