Log In Start studying!

Select your language

Suggested languages for you:
Answers without the blur. Sign up and see all textbooks for free! Illustration


College Physics (Urone)
Found in: Page 731

Answers without the blur.

Just sign up for free and you're in.


Short Answer

In which of the three semiconducting materials listed in Table 20.1 do impurities supply free charges?

(Hint: Examine the range of resistivity for each and determine whether the pure semiconductor has the higher or lower conductivity.)

Germanium is a semiconducting material.

See the step by step solution

Step by Step Solution

Step 1: Concepts

A semiconductor material has a flow of charge because of impurities. Higher

numbers of free electrons will participate in the flow of a higher current, which

means lower resistance.

Step 2: Explanation

After observing the range of resistivity of the three materials, it is easy to tell that

Germanium has the least resistivity (less than one). The lesser the resistivity, the

greater the conductivity of a material. Hence Germanium is more conductive (because

the impurities supply free charges).

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.