a charge of 80 nC is uniformly distributed along the x axis from x=0 to x=2 m .determine the magnitude of electric field at a point on the x axis with x=8 m.
a)30 N/c
b)15
c)48
d)90

Question

a charge of 80 nC is uniformly distributed along the x axis from x=0 to x=2 m .determine the magnitude of electric field at a point on the x axis with x=8 m.
a)30 N/c
b)15
c)48
d)90

vincent-lyon.fr · Answer

You know the 2 formulae with sines and cosines, don't you?

For your information, traditional unit for electric field is not N/C but V/m

vincent-lyon.fr · Answer

Sorry, I misread your problem. Did not see that the point was on the axis itself :-(

anonymous · Answer

yeah..i did using that method..but didnt get the answer.
|dw:1337075283568:dw|
$$k \lambda/r $$
gives 720/12 which is 60