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If the load resistance of a C.E. stage increases by a factor of 2, what happens to the high frequency response?

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If the load resistance of a C.E. stage increases by a factor of 2, what happens to the high frequency response?

(a) The 3 db roll off occurs faster

(b) The 3 db roll off occurs later

(c) The input pole shifts towards origin

(d) The input pole becomes infinite

I got this question in my homework.

Enquiry is from Effect of Various Capacitors on Frequency Response topic in chapter Transistor Frequency Response of Analog Circuits

1 Answer

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Correct option is (a) The 3 db roll off occurs faster

Easy explanation: If the load resistance increases by a factor of 2, the output pole decreases since it’s inversely proportional to the load resistance. Hence the C.E. stage experiences a faster roll off due to the pole.

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