An npn BJT has the following values: VCC = +15 V, RC = 1.5 k, RB ...

[londonang]

An npn BJT has the following values: VCC = +15 V, RC = 1.5 k, RB = 47 k, and hFE = 80 at IC = 10 mA. The minimum value of +Vin required to saturate the transistor is
 
  A) 1.25 V B) 15 V C) 6.58 V D) 5.88 V

Question 2

An NPN transistor will be open from emitter to collector when
 
  A) the base is more positive than the emitter. B) the base is more negative than the emitter.
  C) the emitter is more positive than the collector. D) the collector is more positive than the emitter.

[EAN94]

Answer to Question 1

C

Answer to Question 2

B