Two Long Parallel Wires Are Separated by 2

question 24

Multiple Choice

Two long parallel wires are separated by 2.0 cm. The current in one of the wires is three times the other current. If the magnitude of the force on a 2.0-m length of one of the wires is equal to 60 μN, what is the greater of the two currents?

• A) 2.0 A
• B) 1.0 A
• C) 3.0 A
• D) 9.0 A
• E) 1.5 A

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Definitions:

Economic Profit

The difference between total revenue and total costs, including both explicit and implicit costs.

Perfectly Competitive Firm

A company that operates in a market where there are many buyers and sellers, no barriers to entry or exit, and the firm sells a homogeneous product.

MR

The extra revenue that a firm gains when it sells an additional unit of output, essentially another term for marginal revenue.

AVC

Average Variable Cost, the total variable costs divided by the quantity of output produced.