Statement-I: By doping silicon semiconductor with pentavalent material, the electrons density increases.

Statement-II: The n-type semiconductor has net negative charge.

In the light of the above statements, choose the most appropriate answer from the options given below:

The current flow through the resistance in the given circuit is : (Cut-off voltage for both diodes is 0.7 V)

A n-p-n transistor can be used as

The output (X) of the logic circuit shown in figure will be

 

In the above diagram, balance length for E' is ℓ₀. If cross sectional area of wire AB is doubled then what will be new balancing length ?

The figure shows a logic circuit with two inputs A and B and an output C. The voltage wave forms of A, B and C are as given, then logic circuit will be equivalent to :-