A Circular Piece of Wire Connected to the Terminals of a Battery

question 4

Multiple Choice

A circular piece of wire connected to the terminals of a battery is lying on a table.The surface of the table is in the horizontal plane.As viewed from above,electrons move through the wire in the counterclockwise direction.In which direction is the magnetic field at the center of the circular wire?

• A)up
• B)down
• C)clockwise
• D)counterclockwise

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