A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25¬¨¬®¬¨¬µA at the room, temperature. What is input resistance?$

7k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

3k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

5k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

1k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

A common emitter transistor amplifier has a collector current of 10mA,

1.	A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25¬¨¬®¬¨¬µA at the room, temperature. What is input resistance?$
A.	3k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
B.	5k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
C.	1k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
D.	7k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
Answer» D. 7k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ

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A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25¬¨¬®¬¨¬µA at the room, temperature. What is input resistance?$

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