Olly Price
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 Jan 20 comment What happens if a current flows through a wire wrapped around a magnetised material? The coil is fixed in space, the magnetized cylinder is rotated along with the coil, the total resistance I would assume is R, although the question did not specify. Jan 19 awarded Popular Question Jan 18 accepted What happens if a current flows through a wire wrapped around a magnetised material? Jan 17 awarded Popular Question Jan 13 awarded Promoter Jan 11 asked What happens if a current flows through a wire wrapped around a magnetised material? Jan 11 accepted How does this approximation of the $B$-field of a charged rotating disk for $z\gg R$ make sense? Jan 10 asked How does this approximation of the $B$-field of a charged rotating disk for $z\gg R$ make sense? Jan 7 asked What is the difference between free current and displacement current? Jan 6 asked How do the voltage rises balance with the voltage drops in this example of a series circuit? Jan 5 asked How to compute the charge as a function of time in a simple C-L circuit Dec 30 accepted How do you calculate the back emf? Dec 30 asked How do you calculate the back emf? Dec 28 awarded Popular Question Dec 21 awarded Notable Question Dec 21 awarded Popular Question Nov 14 awarded Good Question Nov 4 comment What are the modes of vibration on an oscillating spring? OK thanks. So with my eigenvector (1,1), the two masses will be moving both right, and then both left, and so on (in SHM?). With my eigenvector (1,-1), the middle spring will be compressed, then stretched, then compressed, and so on. Does this interpretation make sense? Nov 4 asked What are the modes of vibration on an oscillating spring? Sep 4 awarded Popular Question