Two charges located along the x-axis, (-3*10^-6)C at the origin, and (6*10^-6)C at the point (2,0)(adsbygoogle = window.adsbygoogle || []).push({});

What is the electric field at point -1,0?

i did:

Etotal = Eq1+Eq2

=(k(q1)/r^2) + (k(q2)/(2-r)^2)

=(-2.09*10^4) N/C

Can someone please double check my calculations (i did it a few different ways and i always end up with a negative answer)? I plugged this into http://hyperphysics.phy-astr.gsu.edu/hbase/electric/e2p.html#c1 and for some reason their answer comes out positive. Which one is correct?

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# Homework Help: Electric Field Done Correctly?

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