When a magnetic field changes inside a coil of wire, it induces an electric current.
Drag the bar magnet back and forth through the copper coil to generate electricity and light the bulb.
Drag the magnet to induce a current
Electrodynamics
Faraday's Laboratory
Move the magnet inside the coil of wire. Notice how the voltmeter needle deflects and the lightbulb shines only while the magnet is in motion.
Voltmeter Reading
0.00 V
Coil Turns
3 Loops
Motion Speed
0.0 m/s
Lenz's Law: The induced current creates a secondary magnetic field that opposes the change in magnetic flux that created it!