i need some time to digest...
back EMF, is it back electro...... force? what is it called?
the voltage spike induced come from which part of the coil? For example, the coil is connected one end to the Vcc and the other to the collector, the spike goes towards the collector? Then the reversed parallel diode will direct it back? or absorb it?
try to resist change in current flow? what does it mean? it means it tries to keep the current flowing?
How come when it tries to keep the current flowing, the voltage spike will induced??