Yes: immediately after the magnet is released its velocity is very small, and therefore its dB/dt should be near zero. Then, as the magnet accelerates, its velocity (and hence, the magnitude of dB/dt) should increase rapidly. However, as the magnet passes through the coil and begins to fall...
Since the coil begins to accelerate toward the magnet at t=0, shouldn't the flux be decreasing (or increasing) rapidly as the magnetic field grows in strength? And because emf is the negative time-derivative of flux, shouldn't the voltage be increasing (or decreasing) rapidly also?
I'm fairly...
Hi,
I've been thinking about the shape of the voltage waveform induced by a magnet falling through a coil. I know (both intuitively and from empirical experience) that the voltage should become increasingly positive as the magnet approaches the coil, then it should decrease rapidly...