A Wire Rod Rolls with a Speed of 20 M/s

question 53

Multiple Choice

A wire rod rolls with a speed of 20 m/s on two metallic rails, 1.0 m apart, that form a closed loop. If the magnetic field is 1.5 T into the page, the power dissipated in the resistor R and the current direction are, respectively,

• A) 33 mW, clockwise.
• B) 33 mW, counterclockwise.
• C) 76 mW, counterclockwise.
• D) 76 mW, clockwise.
• E) 50 mW, clockwise.

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Definitions:

Specialization

The use of the resources of an individual, a firm, a region, or a nation to concentrate production on one or a small number of goods and services.

Total Output

The total amount of goods or services produced by an economy, industry, company, or individual over a specific period.

Continued Losses

Ongoing financial deficits where expenses exceed revenues over a period of time.

Distribution of Income

The way in which a nation’s total income is spread among its population, affecting economic stability and growth.