Consider the transistor circuit given below. It is desired

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Consider the transistor circuit given below. It is desired to have V₀ = V_in. What should be the value of R to achieve the condition. Assume V_BE = 0·7 V, V_CE(sat) = 0·2V and I = 8·6 mA—

1. 1 kΩ
2. 500 Ω
3. 2 kΩ
4. 3 kΩ

Correct Option: B

The given circuit

Given, V_BE = 0·7V, V_CE(sat) = 0·2V and I = 8·6 mA The given circuit can be redrawn as

From above figure, applying KVL to the loop, we get
– IR – V_BE + 5 = 0
or – (– 8·6 mA).R + 4·3 = 0

or R =	4·3 V	= 500 Ω
	8·6 mA

Hence alternative (B) is the correct choice.