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 9 years by Anonymous User

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

MIT Department of Physics Technical Services Group

MIT Department of Physics Technical Services Group

Category: Science | Updated over 7 years ago

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


Viewed
54713 times

More from MIT Department of Physics Technical Services Group

MIT Physics Demo -- Centrifugal versus Centripetal Motion

MIT Physics Demo -- Centrifugal ver...

Added over 9 years ago | 00:01:18 | 39199 views

Ripple Tank: Interference of Two Point Sources

Ripple Tank: Interference of Two Po...

Added over 8 years ago | 00:01:41 | 51397 views

Dissectible Capacitor

Dissectible Capacitor

Added almost 9 years ago | 00:02:54 | 52155 views

MIT Physics Demo -- Microwave Interference

MIT Physics Demo -- Microwave Inter...

Added over 9 years ago | 00:02:11 | 31485 views

MIT Physics Demo -- Jacob's Ladder and the Melting Nail

MIT Physics Demo -- Jacob's Ladder ...

Added almost 10 years ago | 00:01:26 | 60483 views

Moving Sand Cart Over a Rotating Surface

Moving Sand Cart Over a Rotating Su...

Added over 8 years ago | 00:01:13 | 38936 views