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2019 WAEC Physics Theory Explain each of the following terms as used in Electronics. (a)  free electrons; (b)  holes.  

Physics
WAEC 2019

Explain each of the following terms as used in Electronics.

(a)  free electrons;

(b)  holes.  

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Explanation

Explanation of terms

(a) Free electrons; Negative charge carriers                                                                                

(b) Holes; Positive charge carriers

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