Recent content by kenneth1100

thank you i forgot that V in a shell/sphere is the same as if it's on the surface I thought the p.d. by the larger shell were different on the surface of the larger shell and on the surface on the smaller shell... that's why i got trouble anyway, thanks~

for the part of Capacitance of concentric shells why Va equals that? why the voltage on the surface of a is affected by -Q/(4pi*epsilon*b), which represents the voltage on the surface of b these two voltage represents something at different position!