Germanium diode are connected in parallel with a silicon diode, why current flow through the germanium diod?

Question

if the voltage across the diodes are 12v which is in the forward bias direction...

Answer 1

the germanium diode has a lower on voltage than the Si diode say 0.2 and 0.7 respectively...since they are parallel and the germanium diode will maintain a 0.2V across its terminals...this forces the same 0.2V across the parallel Si diode, which is less than the required 0.7V turn on voltage....therefore all current will be forced to pass through the germanium diode.

Answer 2

gm diode have voltage drop 0.3 but the si diode have drop 0.7.

due to this gm on first and current flow ac cross it

Answer 3

Due to thermal characteristics.