8
votes
3answers
349 views

Why is inductance (L) proportional with turns-square (N²)?

We start from the Maxwell's Equation $$ \mathbf{\nabla} \times \mathbf{B} = \mu \mathbf{J} + \overbrace{\mu \epsilon \dfrac{\partial \mathbf{E}}{\partial t}}^0. $$ We take surface integration of ...
1
vote
0answers
89 views

Ground plane and magnets

I am making a wheel encoder out of a Hall Effect sensor with magnets in a concentric circle on the wheel. The Hall effect sensor is on a 2-layer 9x5mm pcb. I usually fill in the layers by drawing a ...
1
vote
1answer
445 views

Do diamagnetic material exhibit induction?

Silly question perhaps, but do metals with the property of diamagnetism also exhibit inductance? Would a fluctuating magnetic field induce a current in a diamagnetic metal?