A Long Straight Wire on the Z-Axis Carries a Current

question 65

Multiple Choice

A long straight wire on the z-axis carries a current of 8.0 A in the +z direction (out of the paper) . A circular loop of radius 10 cm lies in the xy-plane and carries a 3.0-A current, as shown in the figure. Point P, at the center of the loop, is 25 cm from the z-axis. An electron is projected from P with a velocity of 3.0 × 10⁶ m/s in the -x direction. What is the y component of the magnetic force on the electron? (e = 1.60 × 10^-19, μ₀ = 4π × 10^-7 T ∙ m/A)

• A) -9.0 × 10^-18 N
• B) 9.0 × 10^-18 N
• C) -4.5 × 10^-18 N
• D) 4.5 × 10^-18 N
• E) zero

Explain the impact of historical trade policies on imports and exports.

Analyze the role of exchange rates in trade balance and how they affect trade surplus or deficit.

Evaluate the principles guiding the international trade according to comparative and absolute advantage theories.

Determine the impact of specialization and trade on production and consumption of goods between countries.

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