@@kuldipkunghadkar6802 Well no one is explaining it. For the surface integral, the value of r is constant. So for r equals infinity the value of both V and E is zero. But for the volume, it varies from 0 to r. So there are some values of r for which the value of E is definitely not zero even though r is very large.
At 7:05 why is the second term not going to zero E^2 has 1/ r^4 and dV has r^3 so it comes to 1/r at infinity this also should go to zero right ??
Exactly... I doesn't get the clear cut explaination yet. If u did plz inform me
@@kuldipkunghadkar6802 Well no one is explaining it. For the surface integral, the value of r is constant. So for r equals infinity the value of both V and E is zero. But for the volume, it varies from 0 to r. So there are some values of r for which the value of E is definitely not zero even though r is very large.