In case of solar diode what is the significance of voltampere relation of characteristic curve in fourth quadrant ?

Draw the I-V characteristic curve for a diode.

What kind of diode is used as a voltage regulator? .draw the v-i characteristic curve for this diode.

Draw the characteristic curve of a samiconductor diode.

If two inputs of a NAND gate are joined, what type of a gate is formed? Draw the V-I characteristic curve for forward and reverse bias of a p-n junction diode. (Graph sheet is not required.)

What is Zener diode? Draw its voltage vs current characteristics in the reverse bias and indicate the breakwon voltage on the characteristics. Mention one important use of this diode.

Draw a circuit diagram to illustrate the action of a Zener diode as a voltage regulator. Draw the current versus voltage characteristics curve of a Zener diode. Indicate the position of Zener voltage in the curve.

Draw the characteristic curve of a LED. Can you recognise any difference from the characteristic curve of an ordinary semiconductor diode?

What is Zener dioide? Draw its voltage vs currrent characteristics in the reverse bias and indicaste the breakdown voltage on the characteristics. Mention one important use of this diode.

Draw a characteristics curve of zener diode showing the variation of volatage with respect to the currrent and indicate the position of "zener voltage" in the graph.

In case of a moving coil galvanometer, what is the relation between the current I and the angle of deflection theta ?