During the transition time or turn-on timea)The forward anode voltage ...
The correct answer is C: The forward anode voltage decreases from 90% to 10% and the anode current increases from 10% to 90% of the initial value during the transition time or turn-on time.
During the transition or turn-on time of a device like a diode or transistor, the device undergoes a change in its conduction state from off (blocking state) to on (conducting state). For a diode, this refers to the process of transitioning from reverse-biased to forward-biased conduction.
In the case of a diode, during the turn-on time, the forward anode voltage gradually decreases from 90% to 10% of the initial value. This means that the voltage across the diode decreases, allowing it to start conducting current.
Simultaneously, the anode current increases from 10% to 90% of the initial value. As the forward voltage decreases, the diode starts conducting and allows more current to flow through it.
Therefore, during the transition time or turn-on time, the forward anode voltage decreases from 90% to 10%, and the anode current increases from 10% to 90% of the initial value. The correct answer is C.