I know that a current loop acts as a dipole and when it is placed in a dipole it starts rotating and does rotate until the fields go away.

If I place a dipole inside another fixed dipole, will it also rotate similarly?

  • $\begingroup$ "when it is placed in a dipole" What do you mean? $\endgroup$ – acarturk Aug 3 '19 at 20:12

I know of no situation matching your opening statement. You need more details. Are you talking about to electric or magnetic dipoles? How are they structured or constrained? A compass needle, if placed the field of another magnetic dipole (like that of the earth), will undergo damped oscillations until it is in line with the field.

  • $\begingroup$ The inside dipole is free to rotate and the outer dipole is fixed. Both are magnetic dipoles, only inside one is solid i. e. containing both poles in a single piece, and outer dipole is having set up as in a current loop's outer dipole(magnetic). I know there is an unstable and a stable condition for oscillations of inside dipole, just need more clarity. $\endgroup$ – vinaych Aug 4 '19 at 10:00

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