Three charges are placed at corners of an equilateral triangle, as shown in the figure. Electric field at center O due
due to Q is E. If total field at center is 3E, then
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Resultant of E 1 and E 2 is 
Case I: If Q is (+ve), then
and 
will be opposite so
Case II: If 
is (-ve), then 
and 
will be in same direction so
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