Question

two charges of 3nC and 3nC are placed at the vertices, A and B respectively, of an equilateral triangle ABC of side 0.1m. Calculate the resultant electric intensity at a point C.

Answer 1

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find resultant of A and B on C ...

as it is a equilateral triangle so angle between them = 60 degree.

resultant = UNDERROOT 3 KQ/R

= (underroot 3 )X 9 X 10^9 X 3 X 10^-9 / 0.1 X 0.1

= underroot 3 X 2700 c/m^2

HOPE IT WILL HELP YOU