Recent content by leonardo123

yes, i think i have to consider about the eddy current. but so far, i still didi not find any solution. i don't know where i can get started. it is really hard

yes, i am sure. from my point of view, the votage should be zero.but our professor told me the movement of the coil change the density of the magnetic field. and there will be a electromotive force in the ring. what you think?

i am really greatful for your help. but here the coil doesn't rotate in the magnetic field. it just moves up and down, with the speed v=asinwt

i am sorry,but here is a mistake. actually the radius of the coil is fixed, which is equal to r. the velocity of the coil is v=asinwt. sorry for that.now still the same?

i am sorry,but here is a mistake. actually the radius of the coil is fixed, which is equal to r. the velocity of the coil is v=asinwt. sorry for that.now still the same?

but the coil is a loop, my answer is V=0. is that right?

but how can you figure out how quick the flux changes? i mean coil is a loop. assume the resistance of the coil is R, and the radius is r. could you please show me the fuction of votage(electromotive force) in the coil?

hey, it's not that easy. the movement of the coil change the magnetic field intensity. the thing is how can you calculate the changing magnetic intensity and use Maxwell's equation to solve the problem

Homework Statement There is a Static magnetic field,with its intensity B. Assume a coil moving in the magnetic field, with its position function y=asinwt. then calculate the voltage of U Homework Equations The Attempt at a Solution