Massachusetts Institute of Technology
Sign in

MIT Physics Demo -- Inductor Radio

One wire coil is connected to a radio, and another is connected to a speaker. The two coils are not connected to each other. The radio signal is transmitted through the induced magnetic field caused by the current in the wires. The signal is only received when there is a magnetic flux through the receiving coil, and thus no sound is heard when the coils are perpendicular to each other.

Comments (2)

This demonstrates clearly that the electric and the magnetic fields are perpendicular to each other in two spatial dimensions

Posted over 8 years by Anonymous User

hi.. i presented this in our electromagnetics class.. and i answered everything well til my prof asked me how the gap between the solenoid coils relate to the magnetic flux..

hi.. i presented this in our electromagnetics class.. and i answered everything well til my prof asked me how the gap between the solenoid coils relate to the magnetic flux..can anybody help me answer this please?

hi.. i presented this in our electromagnetics class.. and i answered everything well til my prof asked me how the gap between the solenoid coils relate to the magnetic flux..can anybody help me answer this please?what equation or relationship relates the gap to the magnetic flux? so i could answer why the volume increases as the gap decreases..

Posted over 8 years by Anonymous

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 almost 7 years ago

Created
April 10, 2008 14:45
Category
Tags
License
Creative Commons Attribution-NonCommercial (What is this?)
Additional Files


Viewed
38248 times

More from MIT Department of Physics Technical Services Group

MIT Physics Demo -- Bicycle Wheel Gyroscope

MIT Physics Demo -- Bicycle Wheel G...

Added almost 9 years ago | 00:01:28 | 180980 views

MIT Physics Demo -- Levitating Magnet

MIT Physics Demo -- Levitating Magnet

Added 9 years ago | 00:00:47 | 45391 views

Fluorescent and Neon Tubes in an Electric Field

Fluorescent and Neon Tubes in an El...

Added over 7 years ago | 00:02:02 | 42922 views

Physics Demo -- Superconductor

Physics Demo -- Superconductor

Added over 9 years ago | 00:00:56 | 58038 views

MIT Physics Demo -- Back "emf" in a Large Solenoid

MIT Physics Demo -- Back "emf" in a...

Added over 9 years ago | 00:00:23 | 70913 views

Fire Extinguisher on a Tricycle

Fire Extinguisher on a Tricycle

Added almost 9 years ago | 00:00:53 | 41513 views