Question

Obstruction to the motion of electrons in a conductor is called

• A. Conductivity
• B. Resistance
• C. Resistivity
• D. None of the above

Answer 1

The Correct Option is B

To solve the problem, we need to identify the term that describes the obstruction to the motion of electrons in a conductor.

1. Understanding the Concepts:
- Conductivity refers to the ability of a material to conduct electricity. A high conductivity means the material allows electrons to move freely.
- Resistance is the opposition to the flow of electric current. It is the obstruction to the motion of electrons in a conductor. Resistance depends on the material, length, and cross-sectional area of the conductor.
- Resistivity is a material property that quantifies how strongly a material opposes the flow of electric current. It is closely related to resistance, but resistivity is independent of the conductor's dimensions.

2. Correct Term:
The correct term for the obstruction to the motion of electrons is Resistance.

Final Answer:
Obstruction to the motion of electrons in a conductor is called $ \mathbf{Resistance} $.