In an $N-P-N$ transistor,when does the current flow?
- AWhen the collector and emitter are positive with respect to the base.
- BWhen the collector is positive and the emitter is negative with respect to the base.
- CWhen the collector is positive and the base and emitter are at the same potential.
- DWhen both the collector and emitter are negative with respect to the base.
Explore More
Similar Questions
In a transistor amplifier,the voltage gain is
The input signal given to a $CE$ amplifier having a voltage gain of $150$ is $V_{in} = 2 \cos(15t + \frac{\pi}{3}) \text{ V}$. The corresponding output signal will be:
MediumAIPMT 2015
View SolutionIn the study of a transistor as an amplifier,if $\alpha = \frac{I_C}{I_E} = 0.98$ and $\beta = \frac{I_C}{I_B} = 49$,where $I_C, I_B,$ and $I_E$ are collector,base,and emitter currents respectively,then $\left(\frac{1}{\alpha} - \frac{1}{\beta}\right)$ is equal to:
An $npn$ transistor operates as a common emitter amplifier,with a power gain of $60\, dB$. The input circuit resistance is $100\,\Omega$ and the output load resistance is $10\, k\Omega$. The common emitter current gain $\beta$ is:
DifficultJEE MAIN 2019
View SolutionThe output characteristics of an $n-p-n$ transistor represent, ($I_C =$ collector current, $V_{CE} =$ potential difference between collector and emitter, $I_B =$ base current, $V_{BB} =$ voltage given to base, $V_{BE} =$ the potential difference between base and emitter)
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo