Two ammeters $A_1$ and $A_2$ are connected as shown in the given figure. By neglecting the internal resistance of the ammeters, the reading in the meter $A_1$ is (in $\text{A}$)

Which of the following options is correct for the $P-N$ junction diode shown in the figure?

On increasing the reverse bias to a large value in a $P-N$ junction diode,current

When a diode is forward biased,it has a voltage drop of $0.5\, V$. The safe limit of current through the diode is $10\, mA$. If a battery of emf $1.5\, V$ is used in the circuit,the value of minimum resistance to be connected in series with the diode so that the current does not exceed the safe limit is $.....\, \Omega$.

When a semiconducting device is connected in series with a battery and a resistance, a current is found to flow in the circuit. If, however, the polarity of the battery is reversed, practically no current flows in the circuit. The device may be

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