Two Long Parallel Wires Lie in the Xz Plane

question 44

Multiple Choice

Two long parallel wires lie in the xz plane. One wire passes through the point (-2 m, 0, 0) and the other through the point (+2 m, 0, 0) . The wires carry equal currents in the positive z direction.

1. The magnetic field at (-3 m, 0, 0) is in the negative y direction.
2. The magnetic field at (-1 m, 0, 0) is in the positive y direction.
3. The magnetic field at (+1 m, 0, 0) is in the positive y direction.
4. The magnetic field at (+3 m, 0, 0) is in the negative y direction.

• A)1 and 2 are correct.
• B) 1 and 4 are correct.
• C) 2 and 3 are correct.
• D) 3 and 4 are correct.
• E) None of the above are correct.

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Definitions:

Imperfectly Competitive Market

A market structure where individual firms have some control over the price of their products due to factors like product differentiation or few competitors.

Purely Competitive Market

A market structure characterized by many buyers and sellers, free entry and exit, and homogeneous products.

Units of Labor

A measurement in economics indicating the quantifiable effort or work provided by labor forces, often used to determine productivity or cost in production processes.

Capital

Financial assets or the financial value of assets, such as funds held in deposit accounts and/or the physical factories, machinery and equipment used to produce goods.