Semiconductor devices
Answers are for parents and teachers.
1
Ib = 0.04 mA, Ic = 2 mA. What is β?
50
2
Silicon diode, source 9 V, 0.6 V on the diode, current 12 mA. What series R (Ω)? (R = (ℰ – U)/I)
700
3
A diode passes 4 μA at 20 V in reverse. What is the resistance (MΩ)?
5
4
When the voltage rises by 0.1 V the diode current grows 10 times. If it is 2 mA at 0.6 V, what is it at 0.7 V (mA)?
20
5
State the difference between a diode and a transistor.
A diode has one p–n junction (conducts one way), a transistor two (amplifies current).