Two Very Long Parallel Wires Carry Currents in the Positive

question 87

Multiple Choice

Two very long parallel wires carry currents in the positive x direction. One wire (current = 15 A) is coincident with the x axis. The other wire (current = 50 A) passes through the point (0, 4.0 mm, 0) . What is the magnitude of the magnetic field at the point (0, 0, 3.0 mm) ?

• A) 3.8 mT
• B) 2.7 mT
• C) 2.9 mT
• D) 3.0 mT
• E) 0.6 mT

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Definitions:

Innate Ideas

Ideas that we are born with, which may include tendencies to think in certain ways that are hardwired into our minds.

Empirical Ideas

Concepts or thoughts derived from or verified by observation, experience, or experiment as opposed to theory or pure logic.

Indubitable

Not susceptible to being doubted.

Empiricism

The philosophy that insists that all knowledge, except for certain logical truths and principles of mathematics, comes from experience. The term British empiricism is often used to refer specifically to the three philosophers John Locke, George Berkeley, and David Hume. This movement is still very much alive, however, and includes Bertrand Russell and other contemporary philosophers.