- #1
minifhncc
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Homework Statement
A rod 14.0 cm long is uniformly charged and has a total charge of -22.0μC. Determine
(a) the magnitude and
(b) direction of the electric field along the axis of the rod at a point 36.0 cm from its centre.
[I can do (b)]
Homework Equations
Electric field at the point due to a small element, ΔE=(k Δq)/(x^2)
The Attempt at a Solution
I got down to the total field at P being,
(kQ/l) * integral of 1/x^2 from x=0.29 and x=0.43
and I get 6.17 * 10^5 NC^-1
But the answer says 1.59 * 10^6 NC^-1
Are the answers wrong?