In a common emitter amplifier,the output resistance is $5000 \Omega$ and the input resistance is $2000 \Omega$. If the peak value of input signal voltage is $100 mV$ and $\beta=50$,then the peak value of output voltage is

If the resistance $R_1$ is increased (see figure), how will the readings of the ammeter and voltmeter change?

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: $n-p-n$ transistor permits more current than a $p-n-p$ transistor.
Reason $R$: Electrons have greater mobility as a charge carrier.
Choose the correct answer from the options given below:

When $NPN$ transistor is used as an amplifier,

In the circuit shown,the transistor used has a current gain $\beta = 100$. What should be the base resistor $R_B$ so that $V_{CE} = 5\,V$ and $V_{BE} = 0\,V$?

$A$ transistor oscillator is $(i)$ an amplifier with positive feedback,$(ii)$ an amplifier with reduced gain,$(iii)$ the one in which $dc$ supply energy is converted into an output energy. Then