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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 almost 8 years by Anonymous

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MIT Department of Physics Technical Services Group

MIT Department of Physics Technical Services Group

Category: Science | Updated over 6 years ago

Created
April 10, 2008 14:45
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