Question

In switching circuit, transistor is in ON state, values of I_E and l_B are 10 mA and 0.8 mA respectively and R_L is 2 k`Omega`. If V_CE is 7.6 V, then V_CC is ____________.

पर्याय

• 23 V

• 24 V

• 25 V

• 26 V

Answer 1

In switching circuit, transistor is in ON state, values of I_E and l_B are 10 mA and 0.8 mA respectively and R_L is 2 k`Omega`. If V_CE is 7.6 V, then V_CC is 26 V.

Explanation:

I_E = l_B + I_C

l_C = I_E - I_B

l_C= 10 - 0.8 = 9.2 mA

and V_CE = V_CC - I_C R_L

V_CC = V_CE + I_C R_L

= 7.6 + (9.2 x 10^-3 x 2000)

= 7.6 + 18.4

= 26 V