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QPage 119: Q13: HC Verma: Concepts of Physics - Volume 2 Electric Field Potential Page 119: Q13 Solution: The number of electrons in an insulator is of the same order as …

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often focus on the number of electrons, thinking that a conductor has more than an insulator. In reality, $n_{ ext{conductor}}approx n_{ ext{insulator}}$; the key difference is electron mobility—only in conductors are the outer electrons loosely bound and free to move, enabling current flow.

The number of electrons in an insulator is of the same order as the number of electrons in a conductor. What is then the basic difference between a conductor and an insulator?

Step-by-Step Verified Solution

**Answer:** The basic difference between a conductor and an insulator is the freedom of electrons to move. **Step-by-Step Explanation:** In a conductor, the outer electrons are weakly bound and free to move throughout the material. In an insulator, electrons are tightly bound to their atoms and cannot move freely. Although both have similar numbers of electrons, the mobility of electrons in conductors allows them to carry current, while insulators cannot .

All Questions in this Chapter

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