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The ac current gain of a transistor is 1...

The ac current gain of a transistor is 120. What is the change in the collector current in the transistor whose base current changes by `100 muA`?

Text Solution

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Given AC current gain `beta_(ac ) = 120`
change in base current `Delta _(b)=100 muA =100 xx 10^(-6) A`
Change in collector current `Delta _(c ) = ?`
`rArr Delta I_(c ) = beta_(ac) xx Delta I_(b)`
`=120 xx 100 xx 10^(6)`
`=12 xx 10^(3) A =12 mA`
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