Four charges + q each are located at the vertices of square ABCD of side a as shown in figure. Find the electric field E at the midpoint of side BC –
A
B
C
0
D
None of the above
Text Solution
Verified by ExpertsThe correct answer is:
B
E = E 1 +E 2 + E 3 + E 4
The component of E 2 and E 3 along the line will cancel each other then
E = E 1 + E 4
The component perpendicular to BC will added up
E P = E 1 cos θ + E 4 cos θ
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