What is the emitter voltage for the circuit shown in Figure 9-8?

A) 10 V
B) 5 V
C) 1 V
D) 4.3 V

Question

What is the emitter voltage for the circuit shown in Figure 9-8?

A) 10 V 
B) 5 V 
C) 1 V 
D) 4.3 V

Quizplus · Accepted Answer

To find the emitter voltage, we need to find the voltage drop across the emitter resistor. Using Ohm's law, we can calculate the current passing through the emitter resistor:
I = (Vcc - Vbe) / Re
I = (12 V - 0.7 V) / 2.2 kΩ
I ≈ 5.09 mA

The voltage drop across the emitter resistor can be found using Ohm's law again:
Ve = I * Re
Ve = 5.09 mA * 1 kΩ
Ve ≈ 5.09 V

Therefore, the emitter voltage is approximately 5.09 V. The best choice is D.

What Is the Emitter Voltage for the Circuit Shown in Figure