(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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)]

2. Relevant equations

Electric field at the point due to a small element, ΔE=(k Δq)/(x^2)

3. 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?

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# Homework Help: Electric field, direction and magnitude

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