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[" 75.In "npn" transistor,"10^(10)" elec...

[" 75.In "npn" transistor,"10^(10)" electrons enter in emitter region in "10^(-6)],[" sec.If "2%" electrons are lost in base region,then collector "],[" current and current amplification factor "(beta)" ,respectively,are "],[" (1) "1.57mA" ,"49],[" (2) "1.92mA,70],[" (3) "2mA,25]

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