Field Due to a Long Wire: the Figure Shows Four

question 38

Multiple Choice

Field due to a long wire: 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:

Assessment Of Individual Differences

The process of evaluating the unique characteristics and variations among individuals, often in psychological contexts.

Rational Method

A logical approach to gaining knowledge, often involving critical thinking and deductive reasoning.

Projective Tests

Psychological assessments that use ambiguous stimuli to elicit responses that are thought to reveal a person's unconscious thoughts and feelings.

Validity

The extent to which a test or instrument measures what it claims to measure accurately.