Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

In common emitter amplifier, the current gain is 62. The collector resistance and input resistance are 5kΩ an 500Ω respectively. If the input voltage is 0.01 V, the output voltage is

Options:

0.62 V

6.2 V

62 V

620 V

Correct Answer:

6.2 V

Explanation:

$\frac{V_0}{V_{in}}=\frac{R_0}{R_{in}}×β=\frac{5×10^3×62}{500}=10×60=620$

$V_0=620×V_{in}=620×0.01=6.2V$

$∴V_0=6.2volt$