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  4. In a n-p-n transistor circuit, the collector current is 10 mA. If 95 per cent of the electrons emitted reach the collector, which of the following statements are true?

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Q. In a $n-p-n$ transistor circuit, the collector current is $10\, mA$. If $95$ per cent of the electrons emitted reach the collector, which of the following statements are true?

Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

Here, $I_{c}=10\, mA ,\, I_{c}=\frac{95}{100} I_{e}$
$\therefore 10\, mA =\frac{95}{100} I_{ e }$
or $I_{ e }=10 \times \frac{100}{95}=10.53\, mA$