Charged rod Definition and 56 Threads

hey just looking for some help on an electric field question involving a rod of charge. here's the problem: You have a charge, Q, uniformly distributed along a thin, flexible rod with length L. The rod is then bent into a semi-circle. a) Find expression for electric field at center of...

I've been having trouble with this one for a while, and I know where I'm stuck. Here's the problem: There's a uniformly charged rod of length "L" along the x axis. There is also a point on the x-axis that is a distance of "a" away from the end of the rod. So the whole thing looks kind of like...

http://img209.imageshack.us/img209/2646/chargedrod1ew.png I used the equation: kq/(d(d+L)) I converted everything to meters before doing the calculations. (I'm kind of pressed for time at the moment... i'll post the actual work in 2 hours.) I want to make sure the equation is right.

Hi I was just wondering what the answer to the following question would be: If you bring a positively charged rod to an uncharged electroscope causing the vanes or leaves inside to diverge, are negative charges attracted to the knob of the electroscope or do positive charges repel to the...

Ok really stuggling with this, and this is the last in the set lets say there's a rod on the Y and there is a test charge Q located a distance D from the rod on the 45degree line that bisects the x and y axes. (that is the line f(x) = x, identity function) Write an equation in vector...

Ok, I'm inexperienced with the latex code, so excuse me. I'm trying to derive the expression for the electric field at a point, along the perpendicular bisector of a charged rod, of known total charge, length L, a perpendicular distance y from the rod. The horizontal components cancel...