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Q.

A transistor having a β  equal to 80 has a change in base current of 250 μA , then the change in collector current is:

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a

20,000 mA

b

200 mA

c

2000 mA

d

20 mA

answer is D.

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Detailed Solution

β=(ΔiCΔiB) 80=ΔiC250×10−6 ΔiC=80×250×10−6 ΔiC=20000×10−6 =20×10−3=20 mA
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A transistor having a β  equal to 80 has a change in base current of 250 μA , then the change in collector current is: