In the following circuit the $$5$$ $$V$$ zener diode requires a minimum current of $$10$$ $$mA.$$ For obtaining a regulated output of $$5V,$$ the maximum permissible load current $$\left( {{{\rm I}_L}} \right)$$, is ______$$mA$$ and the minimum power rating of zener diode is ________ $$W$$.

In the circuit shown in figure calculate and sketch the wave form of current $$'i'$$ over one period of the i/p voltages. Assume the diodes to be ideal

An ideal op-amp is used to make an inverting amplifier. The two input terminals of the op-amp are at the same potential because

The overall transfer function of the system in Figure, is