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WorksheetsPN - Forward Bias
Total questions: 7
Worksheet time: 4mins
What does it mean to forward bias a PN junction diode?
Connect negative to P and positive to N
Connect positive to P and negative to N
Connect both sides to ground
Leave the diode unconnected
What is the typical cut-in voltage of a silicon diode?
0.7 V
0.2 V
1.1 V
5 V
Why does current not flow in forward bias below the cut-in voltage?
The battery is not connected
There are no electrons in the diode
The diode is in reverse bias
The depletion region is too wide
What happens to the depletion region when the diode is forward biased?
It becomes wider
It becomes narrower
It disappears
It changes to P-type
What causes the current to increase rapidly after cut-in voltage is reached?
Diode breaks down
Holes convert to electrons
External electric field removes the barrier
Depletion layer becomes positively charged
In forward bias, which carriers move across the junction from the N to P side?
Holes
Electrons
Ions
Photons
Why is forward bias important in biomedical devices like ECG machines?
It reverses the signal
It amplifies noise
It allows signal rectification
It blocks all current
