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

Hi there, I am having alot of trouble with this problem. Any help much appriciated.

Thanks inadvance.

Two point charges, each of 4x10^{-6}C are placed 1m away at points A and B respectively. Calculate the electric field strength at a point P, which is a distance of 1m from both A and B in the cases when:

i) both charges are positive

ii) one is positive and one is negative

2. Relevant equations

E=kQ/r^{2}

3. The attempt at a solution

Ok well I know that I need to work out a resultant, however I am not sure whether to use sin or cos, and even then how to use them to get the correct answer!

Thanks again for any input

Mike

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# Homework Help: Resolving Vectors for Electric Charges

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