Recent content by newton1234

thanks :) but can you explain in detail that why we follow this approach and what's wrong with d other one?

i had a problem in this question, i got E = 1/4πεο*Qr/R^3 (using gauss law) when i applied - dV/dr. , i could not got the answer,I used the basic defination of electric potential that said bring charge from infinity to that pt , i integrated it (-E.dr) from infinity to r,as evident i gt an...