Potential energy is the work done in bringing a unit mass from infinity to the center of sphere.
U=integral[from infinty to zero](F.dr.cos(x)) here x=0=>cosx=1.
now f is not constant. it is different outside the sphere and also inside(non uniform density).
Break the integral for outside the...
Two straight current carrying conductors A and B are lying in a vertical plane as shown.The separation between them is h and mass per unit lenght of wires is λ.Keeping one wire fixed (say A),Bis raised by small hieght δh.
Q-1 What would be the work done by external agent?
Q-2 Will the work...