The Figure Shows Four Different Sets of Insulated Wires That

question 21

Multiple Choice

The figure shows four different sets of insulated wires that cross each other at right angles without actually making electrical contact. The magnitude of the current is the same in all the wires, and the directions of current flow are as indicated. For which (if any) configuration will the magnetic field at the center of the square formed by the wires be equal to zero?

• A) A
• B) B
• C) C
• D) D
• E) The field is not equal to zero in any of these cases.

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Definitions:

Neuroticism

A personality trait characterized by anxiety, fear, moodiness, worry, envy, frustration, jealousy, and loneliness.

Conscientiousness

A personality trait characterized by organization, dependability, and a strong sense of duty.

Agreeableness

A personality trait characterized by warmth, friendliness, and a cooperative attitude towards others.

Internal Locus

A belief that one has control over one's life and outcomes through one's own efforts, abilities, and actions.