Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: A transistor amplifier in common emitter configuration has a low input impedance. Reason: The base to emitter region is forward biased.A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true but reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
Correct Answer: B
Solution :
In transistor the emitter-base junction is forward bias while the base-collector junction is given a large reverse bias. Under forward bias the charge carriers move towards base causing the flow of current. The following shows the circuit of a common-emitter amplifier -circuit using an n-p-n transistor. The input (base-emitter) circuit is forward biased by a low voltage battery \[{{V}_{BE}}\], soYou need to login to perform this action.
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