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 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
30099 times

More from MIT Department of Physics Technical Services Group

Physics Demo -- Lenz's Law

Physics Demo -- Lenz's Law

Added 6 years ago | 00:00:29 | 47149 views

MIT Physics Demo -- Driven Mechanical Oscillator

MIT Physics Demo -- Driven Mechanic...

Added almost 6 years ago | 00:01:07 | 35377 views

Exploding Wire

Exploding Wire

Added 11 months ago | 00:01:14 | 1888 views

Charge and Electric Field of a Hollow Conductor

Charge and Electric Field of a Holl...

Added over 2 years ago | 00:01:54 | 7124 views

Plate Sliding Under a Soda Can

Plate Sliding Under a Soda Can

Added over 3 years ago | 00:00:50 | 15593 views

Double Cone and Plane

Double Cone and Plane

Added over 3 years ago | 00:01:11 | 18921 views