This animation shows the relationship between two series voltages.

Drag the sliders to change the resistance between 1 & 100Ω. Notice the readings of voltage across the resistors, in comparison to the voltage across the battery. Also, notice the relationship between the resistance ratios & the voltage ratio.

1. What is the relationship between the voltages around the circuit?
2. What happens to the voltages if both resistors are equal?
3. Set the two resistors so that the left resistor has twice the resistance of the bottom one (a 2:1 ratio). What is the ratio of voltages?