The Current in a Long Wire Creates a Magnetic Field

question 100

Multiple Choice

The current in a long wire creates a magnetic field in the region around the wire.How is the strength of the field at distance r from the wire center related to the magnitude of the field?

• A)field directly proportional to r
• B)field inversely proportional to r
• C)field directly proportional to r²
• D)field inversely proportional to r²

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Definitions:

Firms

Businesses or enterprises engaged in commercial, industrial, or professional activities, aiming to earn profits by providing goods or services.

Adverse Selection

A situation in which one party in a transaction has more information than the other, often leading to an imbalance in a market or poor decision-making outcomes.

Moral Hazard

A situation where one party engages in risky behavior knowing that they are protected from the consequences by another party.

Adverse Selection

A situation where asymmetric information results in high-risk individuals being more likely to select into or remain in a contract designed for low-risk individuals, affecting insurance markets and other transactional relationships.