Consider a compass with a square magnet placed in a uniform electric field, as shown below. Supposing that we place the square-magnet compass in a rightward magnetic field $\vec{B}$ instead of a rightward electric field $\vec{E}$.
A) Clockwise, to align itself with the field.
B) Counter clockwise, to align itself with the field.
C) $180^{\circ}$ either clockwise or counter clockwise.
D) It won't turn, as it is already aligned with the field.
E) It won't turn, because the field wants to twist it around a different axis altogether.
F) It won't turn because it is not affected by this field.

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The Answer of Consider a compass with a square magnet placed in a uniform electric field, as shown below. Supposing that we place the square-magnet compass in a rightward magnetic field $\vec{B}$ instead of a rightward electric field $\vec{E}$.
A) Clockwise, to align itself with the field.
B) Counter clockwise, to align itself with the field.
C) $180^{\circ}$ either clockwise or counter clockwise.
D) It won't turn, as it is already aligned with the field.
E) It won't turn, because the field wants to twist it around a different axis altogether.
F) It won't turn because it is not affected by this field.

Consider a Compass with a Square Magnet Placed in a Uniform