[物理]交流回路
https://drive.google.com/file/d/1Kqdd8IsBws44YjI9razFu21yDYYNS8-Z/view?usp=drivesdk
https://drive.google.com/file/d/1lb8KI-rugFK-KYg1wuz8Vol9b4m5jIOj/view?usp=drivesdk
https://drive.google.com/file/d/1ZFc0RoEhWFqR9jQQapKvssHfo15x5JOp/view?usp=drivesdk
https://drive.google.com/file/d/1Lyd4gBDfejPS9_4oyQBnTW4xgNe8XYQ3/view?usp=drivesdk