Voltage Rise vs. Voltage Drop
Positive charge moving across a change of voltage from the positive polarity sign towards the negative polarity sign experiences a voltage drop (a decrease in its energy)
Positive charge moving across a change of voltage from the negative polarity sign towards the positive sign experiences a voltage rise (an increase in its energy)
If i(t) > 0, the downward moving charge experiences a voltage drop. However, if i(t) < 0 then the upward moving charge experiences a voltage rise.