A Long Straight Wire Has a Constant Current Through It

question 6

Multiple Choice

A long straight wire has a constant current through it to the right.A rectangular metal loop is situated above the wire,and also has a constant current through it,as shown in the figure.Which one of the following statements is true?

• A)The net magnetic force exerted on the rectangle is upward, and there is also a nonzero torque exerted on the rectangle.
• B)The net magnetic force exerted on the rectangle is zero, and the net torque on it is zero.
• C)The net magnetic force exerted on the rectangle is downward, and there is also a nonzero torque on the rectangle.
• D)The net magnetic force exerted on the rectangle is zero, but there is a nonzero torque on the rectangle.
• E)The net magnetic exerted force on the rectangle is downward, and the net torque on it is zero.

---

Definitions:

Operating Loss

A financial metric representing the negative balance resulting from a company's operating expenses exceeding its revenues.

Variable Cost

Costs that change in proportion to the level of activity or volume of goods produced, such as raw materials and labor expenses.

Fixed Costs

Expenses that remain constant regardless of the amount of output or sales, including costs like lease payments, wages, and insurance premiums.

Break-Even Point

The financial point at which costs equal revenues, meaning there is no profit or loss.