In the half-wave rectifier circuit shown,which of the following waveforms is true for $V_{CD}$,the output across $C$ and $D$?

In a half-wave rectifier using a $PN$ junction diode, the input voltage has an amplitude of $25 \ V$ and a frequency of $50 \ Hz$. No filter is used, and the load resistance is $1000 \ \Omega$. The forward resistance of the diode is $10 \ \Omega$. The efficiency of the rectifier is approximately ...... $\%$.

The output across the diode in the given circuit is:

Which is the correct diagram of a half-wave rectifier?

$A$ $220 \,V$ $AC$ supply is connected between points $A$ and $B$ as shown in the figure. What will be the potential difference $V$ across the capacitor?

The output current versus time curve of a rectifier is shown in the figure. The average value of output current in this case is