Question

ln switching circuit, transistor is in ON state and values of I_C and I_B are 4.2 mA and 5 µA respectively and R_C= l k`Omega` and R_B= 300 k`Omega`. If V_BE = 0.5 V, find the value of V_BB.

पर्याय

• 2.5 V

• 2 V

• 5 V

• 5.5 V

Answer 1

2 V

Explanation:

`"I"_"B" = 5 mu"A", "R"_"B" = 300  "k"Omega, "V"_"BE" = 0.5 "V"`

`"V"_"BB" = "I"_"B""R"_"B" + "V"_"BE"`

`= 5 xx 1^-6 xx 300 xx 10^3 + 0.5`

`= 5 xx 3 xx 10^-1 + 0.5`

`= 1.5 xx 0.5`

`= 2  "V"`