The voltage gain of the following amplifier is

Which of the following is used to produce radio waves of constant amplitude?

The device that can act as a complete electronic circuit is

Consider the following statements:
Statement $(A)$: The resistance of an ideal diode in forward biased condition is zero.
Statement $(B)$: In a half-wave rectifier,the load current flows only for every half cycle of the input signals.
Statement $(C)$: In the breakdown region,a Zener diode behaves as a constant voltage source.

When a potential difference is applied across,the current passing through:

If in a $p-n$ junction diode,a square input signal of $5 \ V$ to $-5 \ V$ is applied as shown,which of the following represents the output signal across $R_L$?