What is the relationship between the AC current through an inductor and the voltage across an inductor?
Voltage leads current by 90 degrees✓Правильный ответ
Current leads voltage by 90 degrees
Voltage and current are 180 degrees out of phase
Voltage and current are in phase
Объяснение
The voltage across an inductor is proportional to the rate of change of current, so the voltage peaks a quarter cycle ahead of the current. That makes the voltage lead the current by 90 degrees.