A Solenoid with 400 Turns Has a Radius of 0

question 15

Multiple Choice

A solenoid with 400 turns has a radius of 0.040 m and is 40 cm long. If this solenoid carries a current of 12 A, what is the magnitude of the magnetic field near the center of the solenoid? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A) 16 mT
• B) 4.9 mT
• C) 15 mT
• D) 6.0 mT
• E) 9.0 mT

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Definitions:

Fixed Costs

Expenses that do not vary with the volume of production or sales, such as rent, salaries, and insurance.

Activity Changes

Fluctuations or variations in the operations of a business that can affect its financial performance and necessitate managerial adjustments.

Total Variable Cost

The aggregate of all costs that vary with the level of output, including materials, labor, and other expenses directly tied to the production volume.

High-Low Method

A technique that uses the highest and lowest total costs as a basis for estimating the variable cost per unit and the fixed cost component of a mixed cost.