Two equal charges are situated on the x axis at 40.0 cm on either side of the or

Question

Two equal charges are situated on the x axis at 40.0 cm on either side of the origin as shown in the figure below. Location A is on the perpendicular bisector at a distance of 23.0 cm from the origin on the y axis. (Assume that the +x axis is directed to the right and the +y axis is directed up.)

(a) If

q1 = 3.50 µC

and

q2 = 3.50 µC,

what is the net electric field due to both charges at location A? Express your answer in vector form.

(b) If

q1 = 3q2 (where q2 = 3.50 µC),

what is the net electric field at location A due to both charges? Express your answer in vector form.

Explanation / Answer

a) both charges are equal

electric field due to q1=9X109(3.5X109)X1/(.232+.402)=E

electric field due to q2=9X109(3.5X109)X1/(.232+.402)=E

these two fields are equal in magnitudes and are acting towards the charges. the resultant of these two can be

SQRT(E) ACTING TOWARDS ORIGIN ALONG Y AXIS

similarly solve b

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