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Question

কোনো ট্রানজিস্টর পীঠ (common base) সংযোগে সংযুক্ত্। এর নিঃসারক প্রবাহ 0.085 mA এরং পীঠ প্রবাহ 0.005 mA । প্রবাহ বিবর্ধক গুণক

α

মান কত?

0.80

0.85

0.90

0.95

ANSWER : 4

Descrption

<p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>I</mi><mi>E</mi></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>085</mn><mo>&nbsp;</mo><mi>m</mi><mi>A</mi><mo>,</mo><mo>&nbsp;</mo><msub><mi>I</mi><mi>C</mi></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>005</mn><mo>&nbsp;</mo><mi>m</mi><mi>A</mi><mspace linebreak="newline">&nbsp;</mspace><mi>w</mi><mi>e</mi><mo>&nbsp;</mo><mi>k</mi><mi>n</mi><mi>o</mi><mi>w</mi><mo>,</mo><mo>&nbsp;</mo><msub><mi>I</mi><mi>E</mi></msub><mo>=</mo><msub><mi>I</mi><mi>B</mi></msub><mo>+</mo><msub><mi>I</mi><mi>C</mi></msub><mspace linebreak="newline">&nbsp;</mspace><mi>O</mi><mi>R</mi><mo>,</mo><mo>&nbsp;</mo><msub><mi>I</mi><mi>C</mi></msub><mo>=</mo><mo>&nbsp;</mo><msub><mi>I</mi><mi>E</mi></msub><mo>-</mo><msub><mi>I</mi><mi>B</mi></msub><mspace linebreak="newline">&nbsp;</mspace><mi>O</mi><mi>R</mi><mo>,</mo><mo>&nbsp;</mo><mo>&nbsp;</mo><msub><mi>I</mi><mi>C</mi></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>08</mn><mo>&nbsp;</mo><mi>m</mi><mi>A</mi><mo>&nbsp;</mo><mspace linebreak="newline">&nbsp;</mspace><mi>α</mi><mo>=</mo><mo>&nbsp;</mo><mfrac><msub><mi>I</mi><mi>C</mi></msub><msub><mi>I</mi><mi>E</mi></msub></mfrac><mo>=</mo><mn>0</mn><mo>.</mo><mn>9411</mn></math></p>

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