(a) What is doping in a semi conductor? (b) Draw the symbol for OR gate....

PHYSICS
WAEC 2015

(a) What is doping in a semi conductor?

(b) Draw the symbol for OR gate.

a

Explanation

(a) Doping in a semi conductor is the addition of impurity to a pure semi condutor to increase its electrical conductivity through increase in the number of holes and electrons or charge carriers.

b

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