When the magnetic flux linking a coil changes, an e.m.f. is induced. Its size equals the rate of change of flux linkage (Faraday), and its direction opposes the change that made it (Lenz). Move the magnet faster, add turns or use a stronger magnet, and watch the induced e.m.f. grow.
MissionPredict what happens to the induced e.m.f. when the magnet is moved faster through the coil.Streak 0Best 0
Moving the magnet faster through the coil makes the induced e.m.f.:
flux linkage NΦ0
induced e.m.f. = rate of change of NΦ0
induced current (Lenz)none
No change of flux means no e.m.f. The faster the flux linkage changes, the larger the induced e.m.f.