The Figure Shows a Cross Section of Three Parallel Wires

question 31

Multiple Choice

The figure shows a cross section of three parallel wires each carrying a current of 24 A. The currents in wires B and C are out of the paper, while that in wire A is into the paper. If the distance R = 5.0 mm, what is the magnitude of the force on a 4.0-m length of wire A?

• A)15 mN
• B)77 mN
• C)59 mN
• D)12 mN
• E)32 mN

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Definitions:

Direct Departmental Expenses

Costs that can be directly attributed to a specific department within an organization, such as salaries of departmental staff.

Indirect Expenses

Expenses that are not directly tied to the production of goods or services, such as administrative and marketing costs.

Contribution Margin

The amount remaining from sales revenue after variable costs are deducted, contributing to covering fixed costs and generating profit.

Contribution Margin

The amount remaining from sales revenue after all variable expenses have been deducted, indicating how much revenue is contributing to fixed costs and profits.