12. which of the following accurately describes semiconductor diodes?
a. point-contact diodes are more likely to be used as rectifiers than junction diodes.
b. unlike junction diodes, point-contact diodes are enclosed in a suitable casing and have terminals for connecting them to a circuit.
c. unlike point-contact diodes, junction diodes utilize a point of metal wire in contact with a single wafer of p-type or n-type material.
d. junction diodes are preferred over point-contact diodes for most purposes.

Answer;

D. Junction diodes are preferred over point-contact diodes for most purposes.

Junction diodes are preferred over point-contact diodes for most purposes; accurately describes semiconductor diodes.

Explanation;

-Semiconductor diodes are specialized electronic components with two electrodes called the anode and the cathode, that are made with semiconductor materials such as silicon, germanium, or selenium.

-Point contact diode is formed by touching a metallic wire with an N-type semiconductor to form a small area of contact.

-A p-n junction diode is two-terminal or two-electrode semiconductor device, which allows the electric current in only one direction while blocks the electric current in opposite or reverse direction. Junction diodes are preferred over point-contact diodes for most purposes.

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.