energy from potential difference frees up electrons in semi-conductor, so its conductivity improves.
diodes don't conduct backwards
what is a diode?
a non ohmic conductor that has a much higher resistance in one direction (its reverse)n than in the other direction (its forward)
how can we interpret a diode on a graph?
in the forward facing direction of the diode, the line curves towards the y-axis. so the current is not directly proportional to the potential difference. the resistance changes as the current changes. a diode is a non-ohmic conductor.
resistance of a diode depends on the direction of the current. current can flow one way but not the other.
