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A semicoductor is known to have an electron concentration of 8 x 101 per cm and a hole concentration of 5 x 1012 per cm What is the resistivity of the sample if
A semicoductor is known to have an electron concentration of 8 x 101 per cm and a hole concentration of 5 x 1012 per cm What is the resistivity of the sample if the electron mobility is 23,000 cm? /Vs and hole mobility is 100 cm2/ Vs? (A) 3.4Q cm (C) 0.5 n cm (B 2.5 cm (D) none of these
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Abhijeet Gaurav
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Answer would be (A) 3.4 Ohm cm As Resistivity depends on the no. of electrons present For conductivity we have formula ∆ = mobility of electrons × concentration of electrons × charge (that is 1.6× 10*-19 ) So the Resistivity is opposite of Conductivity so 1/∆ Will give us the Resistivity . I hope this will help you👍 Any thing you couldn't understand can always come back to us.
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Yash patel Best Answer
you can go with option B it's nearest
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Kshitij Chavan![best-answer]()
Answer is A.