Physics-- electrostatics ?

Question

A rod of sulphur is charged so that one of its end is positive & other end is negative.how the rod will move when placed in uniform electric field

1-parallel to its length

2-perpendicular to its length

Answer 1

2-perpendicular to its length

meaning the rod will rotate until the positive end is pointing in the same direction as the electric field

Here is a good explanation with diagram:

http://hyperphysics.phy-astr.gsu.edu/Hba...