# physics

WHICH ONE OF THE FOLLOWING STATEMENTS BEST EXPLAINS WHY SEMICONDUCTORS IN TRANSISTORS ARE DOPED?
A) doping converts the semiconducting material into a metallic material like copper.
b) doping makes the charge carriers mobile.
c) doping makes the charge carriers immobile.
d) doping changes the conductive properties of the semiconductors.
e doping makes the semiconducting material non-conducting.

asked by seema
1. well, the question is whether b or d is the"best explaination".

I vote for d.

http://en.wikipedia.org/wiki/Semiconductor#Doping

posted by bobpursley

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