MIT Physics Demo -- Back "emf" in a Large Solenoid
A large solenoid is connected to DC power through a knife switch. When the switch is closed, the current builds up to approximately 30 amps. When the switch is opened, the solenoid attempts to keep the current flowing, creating a huge emf which ionizes the air in a huge spark.
You need to log in, in order to post comments.
Added over 9 years ago | 00:01:07 | 41727 views
Added over 9 years ago | 00:00:47 | 54414 views
Added over 8 years ago | 00:01:07 | 59230 views
Added over 9 years ago | 00:01:29 | 79937 views
Added 8 years ago | 00:03:00 | 95777 views
Added over 9 years ago | 00:00:28 | 55233 views