Massachusetts Institute of Technology
Sign in | Create Account

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 5 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 5 years by Anonymous

You need to log in, in order to post comments. If you don’t have an account yet, sign up now!

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


Viewed
30407 times

More from MIT Department of Physics Technical Services Group

Ring Falling in a Magnetic Field

Ring Falling in a Magnetic Field

Added almost 3 years ago | 00:03:27 | 9784 views

Bell Labs Wave Machine: Superposition

Bell Labs Wave Machine: Superposition

Added over 3 years ago | 00:00:34 | 11044 views

Potential Energy to Kinetic Energy

Potential Energy to Kinetic Energy

Added over 5 years ago | 00:01:11 | 30106 views

Confetti and the Van de Graaff Generator

Confetti and the Van de Graaff Gene...

Added over 5 years ago | 00:00:55 | 41062 views

Curie Point of Iron

Curie Point of Iron

Added over 2 years ago | 00:01:23 | 3870 views

A Heat Gun

A Heat Gun

Added 1 year ago | 00:01:17 | 2032 views