Two Long Straight Wires Are Parallel and Carry Current in Opposite

question 6

Multiple Choice

Two long straight wires are parallel and carry current in opposite directions.The currents are 8.0 A and 12 A and the wires are separated by 0.40 cm.The magnetic field at a point midway between the wires is:

• A)0 T
• B)4.0 * 10^-4 T
• C)8.0 *10^-4 T
• D)12 * 10^-4 T
• E)20 *10^-4 T

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