First slide

Transistors

Question

In the given transistor circuit, the base current is $35 μ A$ , the value of $R_{b}$ is

Easy

A

$100 k Ω$
B

$200 k Ω$
C

$300 k Ω$
D

$400 k Ω$

Solution

$A p p l y K V L i n l e f t l o o p, + 7 - I_{b} R_{b} = 0 \Rightarrow R_{b} = \frac{7}{35 \times 10^{- 6}} = 200 k Ω$

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