how can i provide rolling action to magnetic or electric dipole kept in electric or magnetic field as the case maybe?
I HOPE BY ROLLING U MEAN THAT THE DIPOLE WILL ROTATE ABOUT IT'S CENTRE .
CONSIDER AN ELECTRIC DIPOLE (CHARGES +Q AND -Q) PLACED SYMMETRICALLY WITH RESPECT TO THE X-AXIS ; +Q BEING PLACED ON NEGATIVE X-AXIS AND -Q ON POSITIVE X-AXIS RESPECTIVELY . LET A MAGNETIC FIELD B EXIST IN THE ENTIRE REGION DIRECTED ALONG THE NEGATIVE Y-AXIS . NOW IF BOTH THE CHARGES ARE GIVEN A VELOCITY OF v IN THE POSITIVE Z DIRECTION THEN THEY WILL ROTATE ABOUT THE CENTRE (ORIGIN).
CONSIDER AN ELECTRIC DIPOLE (CHARGES +Q AND -Q) PLACED SYMMETRICALLY WITH RESPECT TO THE X-AXIS ; +Q BEING PLACED ON NEGATIVE X-AXIS AND -Q ON POSITIVE X-AXIS RESPECTIVELY . LET A MAGNETIC FIELD B EXIST IN THE ENTIRE REGION DIRECTED ALONG THE NEGATIVE Y-AXIS . NOW IF BOTH THE CHARGES ARE GIVEN A VELOCITY OF v IN THE POSITIVE Z DIRECTION THEN THEY WILL ROTATE ABOUT THE CENTRE (ORIGIN).
by rolling motion, i mean rotation along with linear motion of the center of mass.
however the case you have stated is for a charged particle in magnetic field, that however raises another doubt what shall be the sense of rotation for the dipole since both the charges tend to revolve in opposite direction.
in the situation mentioned by suvarthi, the charges should be given velocity in the negative z direction to rotate the duo abt. origin... hope i m correct