Two Conductors Are Made of the Same Material and Have

question 39

Multiple Choice

Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1 m. Conductor B is a hollow tube of inside diameter 1 m and outside diameter 2 m. The ratio of their resistance, R_A/R_B, is:

• A) 1
• C) 2
• D) 3
• E) 4

---

Definitions:

Scientific Method

A systematic approach to research where a problem is identified, relevant data is gathered, a hypothesis is formulated, and then the hypothesis is empirically tested.

Natural Sciences

Branches of science that study the physical world, its phenomena, and processes, including biology, chemistry, physics, and earth sciences.

Nation's Economy

The overarching system of production, consumption, and exchange of goods and services within a country's borders.

Economic Models

Simplified representations of complex economic processes, aimed at forecasting economic outcomes and trends.