The Magnitude of the Magnetic Field That a Long and Extremely

question 28

Multiple Choice

The magnitude of the magnetic field that a long and extremely thin current-carrying wire produces at a distance of $3.0 \mu \mathrm { m }$ from the center of the wire is $2.0 \times 10 ^ { - 3 } \mathrm {~T}$ . How much current is flowing through the wire? $\left( \mu _ { 0 } = 4 \pi \times 10 ^ { - 7 } \mathrm {~T} \cdot \mathrm { m } / \mathrm { A } \right)$

• A) \(19 \mathrm {~mA}\)
• B) \(190 \mathrm {~mA}\)
• C) \(380 \mathrm {~mA}\)
• D) \(30 \mathrm {~mA}\)

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Definitions:

Return on Investment

A performance measure used to evaluate the efficiency or profitability of an investment, calculated as the net profit divided by the initial cost.

Annual Revenue

The total income generated by a business, organization, or individual within a fiscal year from its operations.

Initial Investment

The initial sum of money used to start a business project, purchase assets, or acquire starting capital.

Worst Payoff Rate

The lowest possible return or least favorable outcome from an investment or decision under a specific scenario.