Electrostatics Question 703

Question: ABC is an equilateral triangle. Charges +q are placed at each corner as shown in fig. The electric intensity at center O will be

Options:

A) 14π0qr

B) 14π0qr2

C) 14π03qr2

D) Zero

Show Answer

Answer:

Correct Answer: D

Solution:

[d] Unit positive charge at 0 will be repelled equally by three charges at the three corners of triangle. By symmetry, relsultant

E at O would be zero.



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