How can a photon (which has momentum) from one electrically charged particle to an oppositely charged particle cause these particles to be pulled toward each other - or how can a magnetic field cause ...
I get why $n \cdot p = n_i^2$ in intrinsic semiconductors, but why is that equation is also true in extrinsic case? Here, $n$ is the charge density of the negatively charged particles and $p$ is the ...
I understand the source of this drift current is thermally excited electron hole pair minority carriers, and that minority carrier excitation is constant (and quite low) at constant temperature. ...