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129.
What is the direction of the magnetic field created by the circular wire and battery to the right?

A.   counterclockwise                      C.   into the page
B.   clockwise                                   D.  out of the page

The Right-hand rule determines the direction of the magnetic field.

The current flows counterclockwise because current travels from the positive (long line) end of the battery to the negative (short line) end of the battery.

1.  The thumb is placed in the direction of the current.
2.  The fingers curl around the wire in the direction of the magnetic field.

The magnetic field is coming out of the page.

The Correct Answer is D.