ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Induced current. A student with apparatus for inducing current in a coil. She is about to drop a magnet through the coil. An oscilloscope attached to this will measure the changes in current. Electricity is generated, or induced, when a wire moves through a magnetic field. This principle is exploited in electricity generators, which spin a coil between magnets to convert rotary motion into electrical energy.
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