Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

A common Emitter circuit is used as an amplifier, whose current gain is 50. If input resistance is 1kΩ and input voltage is 5 volt then output current will be :–

Options:

250 mA

30 mA

50 mA

100 mA

Correct Answer:

250 mA

Explanation:

$I_0=β$ $I_{in}=β\frac{V_{in}}{R_{in}}=50×\frac{5}{1×10^3}=250mA$