In case of $\text{NPN}-$transistors the collector current is always less than the emitter current because
A
Collector side is reverse biased and emitter side is forward biased
B
After electrons are lost in the base and only remaining ones reach the collector
C
Collector side is forward biased and emitter side is reverse biased
D
Collector being reverse biased attracts less electrons
[AllMS 1983]
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B
After electrons are lost in the base and only remaining ones reach the collector
After electrons are lost in the base and only remaining ones reach the collector
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In a semiconductor, the concentration of electrons is $8 \times 10^{14} / cm ^3$ and that of the holes is $5 \times 10^{12} cm ^3$. The semiconductor is