Question

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

Options

• 0.62 V

• 6.2 V

• 62 V

• 620 V

Answer 1

6.2 V

Explanation:

`"V"_"o"/"V"_"in" = "R"_"o"/"R"_"in" xx β`

= `(5 xx 10^3 xx 62)/500`

= 10 × 62

= 620

V_o = 620 × V_in

= 620 × 0.01

= 6.2 V

∴ V_o = 6.2 volt