Two Very Long Parallel Wires Are a Distance D Apart

question 1

Multiple Choice

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/ to 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.

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Definitions:

Peripheral Nervous System

The part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord.

Glands

Organs in the body that secrete hormones or other substances directly into the blood or onto a body surface.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column, transmitting neural signals between the brain and the rest of the body.

Reflexes

Automatic, involuntary responses to specific stimuli, such as the knee-jerk reaction, that are mediated by the nervous system.