1
Bicchuram Aveek
·2010-10-11 10:13:17
E = - dV/dr
if E is not = 0 V can never be equal to 0.
So above statement is impossible.
23
qwerty
·2010-10-11 11:08:46
aveek i didnt get ur logic , if a curve has no point of extremum, why cant it be zero? [eg: f(x)=x has no point of extremum but it is zero at some x ]
btw wat if i choose an arbitrary point as zero potential which has a nonzero electric field ??????
suppose i choose the potential at the earth's surface to be zero. Clearly electric field isnt zero.
so it is possible
1
swordfish
·2010-10-11 12:47:19
@Qwerty
But if we proceed with the equation i.e.
E = -dv/dr
Here if we put V=0 then E must be 0 as derivative of 0 is 0.
I guess you meant 'gravitational field'.
1
spidey timon
·2010-10-11 19:04:59
i agree with qwerty potential at a point depends on the reference we choose
23
qwerty
·2010-10-11 19:51:45
@Swordfish: wats d derivative of f(x)=x at x =0??
1
swordfish
·2010-10-12 04:12:29
Thanks everyone. I got it.