Field Due to a Long Wire: Two Long Parallel Wires

question 9

Multiple Choice

Field due to a long wire: Two long parallel wires placed side-by-side on a horizontal table carry identical size currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries current away from you. From your point of view, the magnetic field at the point exactly midway between the two wires

• A) points upward.
• B) points downward.
• C) points toward you.
• D) points away from you.
• E) is zero.

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Definitions:

Contribution Margin

The amount by which the sales of a product or service exceed the variable costs associated with its production, contributing towards covering fixed costs and generating profit.

Depreciation Expense

The allocated portion of the total cost of a company's physical assets that is expensed out on the income statement over a set period, reflecting the asset's consumption and wear and tear.

Fixed Costs

Costs that do not change with the level of production or sales, including expenses like rent, salaries, and insurance.

Variable Cost

Expenses that change in proportion with production output or sales, such as materials and labor.