How does the junction width change when a p-n junction is forward biased?

Draw a circuit diagram with a p-n junction in forward bias.

Explain how the width of depletion layer in p-n junction diode changes when the junction is reverse biased.

Fill in the blanks: When a p -n junction is forward biased, then the motion of charge carriers across the barrier is due to ………………… (drift, diffusion) and when it is reverse biased, then the motion of charge carriers is due to...... (drift, diffusion).

How does the collector current change in a junction transistor, if the base region has larger width?