The Figure Shows Four Different Sets of Insulated Wires That

question 47

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:

Independent Contracts

Agreements between individuals or organizations where one party offers services to another as a non-employee.

Exculpatory Agreement

A contract provision that relieves one party of liability if damages are caused during the execution of the contract.

In Pari Delicto

A legal doctrine stating that if both parties involved in a lawsuit are equally at fault, the court will not assist either party.

In Pari Delicto

A legal doctrine that prevents a plaintiff who has participated in wrongdoing related to the lawsuit from recovering damages.