You are given two p-n junction diodes. Draw the circuit diagram of a half wave rectifier

Draw circuit diagram of Wheatstone bridge.

You are given two p-n junction diodes.Mention the name of an electronic circuit which make use of these diodes to convert A.C. current to continuous D.C. current.

A circuit diagram of an instrument is given below. . Modify the circuit diagram to compare the emf of two cells.