What is the electric field at a location b → = < -0.5, -0.4, 0> m, due to a particle with charge +2 nc located at the origin?

Explanation:

For this case we assume that we want to find the electrical field at the point P as we can see on the figure attached.

The electrical field wormula is given by:

Where r is the distance from the point and the charge. On this case we can use the Pythagoras theorem and we got:

And now we can replace into the formula since we know that and , and we got:

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