I am a little confused with the reasoning of why an increase in potential difference (P.D.) increases the resistance of a non-Ohmic conductor, namely a filament lamp.
From what I've seen this is the reason for why Temperature affects resistance
The increase in temperature increases the vibrational energy of the positive ions causing them to vibrate more vigorously causing the flowing electrons to collide with the ions more frequently, which causes more loss in kinetic energy of the electrons, which reduces the current.
Is it enough to say that an increase in P.D. simply increases the temperature of the conductors causing the effect as described above? or am I missing a few point?