First slide

Transistor

Question

The current gain of transistor in common emitter circuit is 40. The ratio of emitter current to base current is

Easy

A

40
B

41
C

42
D

43

Solution

$β = \frac{I_{C}}{I_{B}}, \frac{I_{E}}{I_{B}} = \frac{I_{C} + I_{B}}{I_{B}} = β + 1$

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