The Figure Shows Three Long, Parallel, Current-Carrying Wires

question 50

Multiple Choice

The figure shows three long, parallel, current-carrying wires. The current directions are indicated for currents I₁ and I₃. The arrow labeled F represents the net magnetic force acting on current I₃. The three currents have equal magnitudes. What is the direction of the current I₂?

• A) into the picture (in the direction opposite to that of I₁ and I₃)
• B) horizontal to the right
• C) vertically upward
• D) vertically downward
• E) out of the picture (in the same direction as I₁ and I₃)

---

Definitions:

Break-Even Point

The point at which total costs and total revenues are equal, meaning no net loss or gain is incurred by the business.

Market Price

The amount of money required to purchase something or the cost at which something can be bought or sold in a free market.

Economic Profit

The difference between total revenue and the sum of explicit and implicit costs.

Marginal Revenue

Marginal Revenue is the additional income received from selling one more unit of a good or service.