What does it mean about the radial to non radial thing? Does someone mind drawing exactly what is required? thanks
Hmm, they are both positive point charges. Imagine when there electric fields meets, what's going to happen to the lines? Their radial pattern will change.
Hmm, they are both positive point charges. Imagine when there electric fields meets, what's going to happen to the lines? Their radial pattern will change.
It wouldn't change to non radial though? I think they're talking about the back end of the charges but I'm not 100%, hence requesting someone to draw a diagram
It wouldn't change to non radial though? I think they're talking about the back end of the charges but I'm not 100%, hence requesting someone to draw a diagram
Take a look at this diagram to give yourself an idea of what they mean. Modify that diagram to suit the magnitude of the charges they used.
I'm failing to see why the answer isn't D. If the magnet is decelerating once it enters the coil (due to Lenz's law) surely this means that the lines of flux cut per second decreases from a given value to zero.
Edit: nvm I think I got it. I might have been getting confused with rate of change of flux linkage and simply flux linkage, i.e. the explanation is that the flux linkage rises from 0 to a value as it enters the field, creating a rate of change and thus inducing emf (causing a current reading to be displayed), but then that change stops occurring, so there's no more induced emf
Can someone please help me? Q24 june 13 section A. I get the emf bit but not the direction. Thanks
Magnetic flux=BA Area which the rod moves through= length * distance covered (where distance covered, d, equals velocity * time taken, from v=s/t) Magnetic flux equals BLvt, emf induced equals the rate of change of flux density. Therefore EMF=BLvt/t, the t's cancel, so the emf=BLv.