If the Current Density in a Wire Is Given by J

question 39

Multiple Choice

If the current density in a wire is given by j = kr, 0 < r < R, where R is the radius of the wire, the current in the wire is

• A)2πkR³/3.
• B)3πkR³/2.
• C)kR³/3.
• D)kR².
• E)kR²/2.

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Definitions:

Economy

An organized system of production, distribution, and consumption of goods and services within a geographical area.

Circular-Flow Diagram

A model that illustrates the movement of goods and services and money between households and businesses in the economy.

Markets

Places or systems in which parties engage in the exchange of goods, services, or information, driven by supply and demand.

Circular-Flow Diagram

A graphical representation illustrating the flow of funds among households, companies, and the government within an economy.