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एक अर्द्धचालक में प्रयुक्त इलेक्ट्रॉन की गतिशीलता (अपवाह वेग प्रति एकांक विद्युत क्षेत्र) 1.6 एस. आई. यूनिट है। इलेक्ट्रॉन का घनत्व 109/m3 है। (होल सान्दता नगण्य है)। अर्द्धचालक की प्रतिरोधकता है-

(A) 0.4 Ωm

(B) 2 Ωm

(C) 4 Ωm

(D)0.2 Ωm

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