M

Mr. Dubey • 52.30K Points
Coach 

Q. The free electron concentration in N-type GaAs is controlled by:

(A) effective doping
(B) bias voltage
(C) drive current
(D) none of the mentioned
Correct : Option (A)

Explanation: 
 the free electron concentration in n-type gaas is controlled through effective doping so that they range from 1014 to 1017 per cc at room temperature. the typical specimen of n-type gaas has the dimensions 150 µm by 150 µm.

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