Massachusetts Institute of Technology
Sign in

MIT Physics Demo -- Galvanometer Principle

Two large coils of wire ("Helmoholz coils") are connected to 125V DC power, and produce a uniform magnetic field between the coils. A separate coil is suspended with this field. Switching the polarity of the DC current in the inner coil causes it to rotate in opposite directions.

This principle is used by devices called galvanometers to measure electric current.

Comments (1)

That was cool. Hannah

Posted almost 8 years by Anonymous User

You need to log in, in order to post comments.

Created
July 08, 2008 10:38
Category
Tags
License
Creative Commons Attribution-NonCommercial (What is this?)
Additional Files


Viewed
52743 times

More from MIT Department of Physics Technical Services Group

Rotating Candles in a Dome

Rotating Candles in a Dome

Added 6 years ago | 00:04:33 | 27599 views

Physics Demo -- Jumping Ring

Physics Demo -- Jumping Ring

Added over 8 years ago | 00:01:40 | 57480 views

MIT Physics Demo -- Conductivity of Ionized Water

MIT Physics Demo -- Conductivity of...

Added over 8 years ago | 00:00:53 | 50100 views

Temperature Effect on Resistance

Temperature Effect on Resistance

Added over 7 years ago | 00:01:10 | 47085 views

MIT Physics Demo -- No-Win Tug of War

MIT Physics Demo -- No-Win Tug of War

Added 8 years ago | 00:00:33 | 41847 views

Ripple Tank: Interference of Two Point Sources

Ripple Tank: Interference of Two Po...

Added 7 years ago | 00:01:41 | 49711 views