Question

emitter current in a transitor is 2.2mA And the collector current is 2mA. the base current is
1)100mewA
2)200mewA
3)300mewA
4)400mewA​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

Hence, the correct option is (2) 200μA

Explanation:

We know that the currents in a transistor is :

I₁ =  I₂ +  I₃

where the I₁ = emitter current

I₂ = base current

I₃ = collector current

hence by the above formula :

It is given that emitter current, I₁ = 2.2 mA = 2.2 x 10⁻³ A

I₃ = collector current = 2 x 10⁻³ A

therefore, the base current, I₂ = I₁ - I₃ = 0.0022 - 0.002 = 2 x 10⁻⁴ A

In terns of μA, it is = 2 x 10⁻⁴ x 10⁶ μA = 200 μA

Hence, the correct option is (2) 200μA

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