![electromagnetism - How can a magnetic field exert a torque that causes a disc to rotate? - Physics Stack Exchange electromagnetism - How can a magnetic field exert a torque that causes a disc to rotate? - Physics Stack Exchange](https://i.stack.imgur.com/BUQEb.jpg)
electromagnetism - How can a magnetic field exert a torque that causes a disc to rotate? - Physics Stack Exchange
Frequency-dependent conversion of the torque of a rotating magnetic field on a ferrofluid confined in a spherical cavity - Soft Matter (RSC Publishing)
![On matching the magnetic torque exerted by a rotating magnetic field to the torsional stiffness of braided DNA molecules for torque estimations - ScienceDirect On matching the magnetic torque exerted by a rotating magnetic field to the torsional stiffness of braided DNA molecules for torque estimations - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0301010418304713-ga1.jpg)