Field Due to a Long Wire: Two Very Long Parallel

question 53

Multiple Choice

Field due to a long wire: Two very long parallel wires are a distance d apart and carry equal currents in opposite directions. The locations where the net magnetic field due to these currents is equal to zero are

• A) midway between the wires.
• B) a distance d/2 to the left of the left wire and also a distance d/2 to the right of the right wire.
• C) a distance d to the left of the left wire and also a distance d to the right of the right wire.
• D) a distance d/ o the left of the left wire and also a distance d/ to the right of the right wire.
• E) The net field is not zero anywhere.

---

Definitions:

Lung Perfusion Scan

A diagnostic test that uses a radioactive substance to evaluate the circulation of blood in the lungs.

Radioactive Contrast Medium

A type of contrast agent used in medical imaging that contains radioactive materials to improve the visibility of internal organs or structures.

Pulmonary Blood Flow

involves the circulation of blood from the heart to the lungs and back, facilitating oxygenation of the blood.

Chronic Bronchitis

A long-term inflammation of the bronchial tubes, leading to coughing, phlegm, and breathing difficulties, often associated with smoking.