WorksheetsFormation of depletion layer
Total questions: 6
Worksheet time: 3mins
What causes electrons and holes to start moving when P-type and N-type materials are joined?
External voltage
Heat
Concentration difference
Pressure
What happens when an electron and a hole meet at the junction?
They bounce back
They recombine and cancel each other
They form a photon
They generate heat
What is left behind in the junction area after recombination?
Fixed ions (positive and negative)
Free electrons and holes
No particles at all
Only positive charges
What do these fixed ions create in the depletion region?
Light
Sound
Pressure
Electric field
In which direction does the electric field point in a PN junction?
From P to N
Circular direction
From N to P
No specific direction
Why does further movement of electrons and holes stop after the depletion layer forms?
Electric field opposes further movement
Junction is broken
Voltage is too high
Lack of charge carriers
