The voltage gain of a transistor in common emitter configuration is 160 . The resistances in base and collector sides of the circuit are $1 \mathrm{k} \Omega$ and $4 \mathrm{k} \Omega$ respectively. If the change in base current is $100 \mu \mathrm{~A}$, then the change in output current is

Normally a capacitor is connected across the output terminals of a rectifier to

A zener diode of zener voltage 30 V is connected in circuit as shown in the figure. The maximum current through the zener diode is

Two logic gates are connected as shown in the figure. If the inputs are $A=1$ and $B=0$, then the values of $Y_1$ and $Y_2$ respectively are