Question

The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the CE configuration is 1K Ω. The peak value for an AC input voltage of 0.01 V of collector current is ______.

Options

• 500 μA

• 0.25 mA

• 400 μA

• 0.01 mA

Answer 1

The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the CE configuration is 1K Ω. The peak value for an AC input voltage of 0.01 V of collector current is 500 μA.

Explanation:

For Input Side

I_B = `"V"/"R"_1=0.01/10^3=10^-5`A

Current Gain,

β = `"I"_"C"/"I"_"B"`

⇒ I_C = βI_B = 50 × 10^-5 A

= 500 × 10^-6 A

= 500 μA