If in a $p-n$ junction diode,a square input signal of $10\, V$ (varying from $+5\, V$ to $-5\, V$) is applied as shown,then the output signal across $R_L$ will be:

For the circuit shown in the figure,the equivalent resistance between points $A$ and $B$ for two cases $(i)$ $V_A > V_B$ and (ii) $V_B > V_A$ is $\qquad \Omega$ and $\qquad \Omega$ respectively. ($D_1$ and $D_2$ are ideal diodes)

The current through the ammeter (neglecting internal resistance) in the following circuit is

What is the current in the circuit shown below?

If each diode has a forward bias resistance of $25\,\Omega$ in the circuit shown below,which of the following options is correct?

In the given figure,which of the diodes are forward biased?