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 almost 7 years ago | 00:02:33 | 48746 views
Added over 7 years ago | 00:02:25 | 41077 views
Added over 8 years ago | 00:00:57 | 44247 views
Added almost 8 years ago | 00:02:05 | 39247 views
Added 8 years ago | 00:00:53 | 40631 views
Added over 7 years ago | 00:01:19 | 48546 views