An NPN transistor | Semiconductor Electronic | JEE-MAIN 2019

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JEE MAIN 2019

09-04-2019 - S1

Question

An NPN transistor is used in common emitter configuration as an amplifier with $1 \mathrm{k} \Omega$ load resistance. Signal voltage of 10 mV is applied across the base-emitter. This produces a 3 mA change in the collector current and 15 $\mu \mathrm{A}$ change in the base current of the amplifier. The input resistance and voltage gain are :

Select the correct option:

A

$0.33 \mathrm{k} \Omega, 1.5$

B

$0.33 \mathrm{k} \Omega, 300$

C

$0.67 \mathrm{k} \Omega, 200$

D

$0.67 \mathrm{k} \Omega, 300$

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Solution

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