Question

If an emitter current is changed by 4 mA, the collector current changes by 3.5 mA. The value of β will be ______.

Options

• 7

• 0.875

• 0.5

• 3.5

Answer 1

If an emitter current is changed by 4 mA, the collector current changes by 3.5 mA. The value of β will be 7.

Explanation:

Given,

Emitter current (I_E) = 4 mA

Collector current (l_C) = 3.5 mA

 β = ?

I_B = I_E - I_C

=(4 - 3.5) mA

= 0.5 mA

 β  = `"I"_"C"/"I"_"B"`

= `3.5/0.5`

= 7