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Transistor: Working

A transistor ...

Question

A transistor has a base current of 1 mA and emitter current 90 mA. The collector current will be

A

90 mA

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B

1 mA

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C

89 mA

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D

91 mA

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Solution

The correct option is C 89 mA
$I_{c} = I_{e} - I_{b}$ = 90 - 1 = 89 mA.

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