Recent content by lincsimp

ah thanks! a bit of calc shows that you have maximum sensitivity when r1=r2...

any ideas?

Homework Statement Why is a potential divider required in a sensor circuit? Homework Equations V_out = r1/(r1+r2)*V_in The Attempt at a Solution Firstly you can get the required voltage across the sensor by changing the resistance of r2 (if r1 is the sensor). Apparently...

hi again I decided to give up with the complicated integral's (although they would hae been fun!) for now and decided to use a large array of point charges in layers alternating +ve,-ve,+ve... (red = +ve, blue = -ve) An Euler iteration with Coulomb's Law got me that image (and I could have...

hmmm... so it looks as though this is something I'll have to derive for myself. I think I'm going to treat each end as a uniformly charged disk... Google gave me: http://www.richmond.edu/~ggilfoyl/genphys/132/102solutions/Ch26/EOC_Solution_26_15.pdf...

Thank you hootenanny; that appears to be what I was looking for! I'll be back if/when any problems arise... :)

hey how would I go about calculating the B field of a bar magnet? I've already managed to calculate the electric field between two charged particles etc and draw that, but I just can't see where to start with this one as its not just a point at north and south but a whole load of atoms...