Question

Charges +2q, +q and +q are placed at the corners
A, B and C of an equilateral triangle ABC. If E is the electric field at the circumcentre O of the triangle, due to the charge +q, then the magnitude and direction of the resultant electric field at O is-

• A. E along AO
• B. 2E along AO
• C. E along BO
• D. E along CO

Answer 1

Answer: (C)

E along BO

Answer 2

v² = u² – 2as , 0 = (eV₀)² – $\frac { 2 \mathrm { eE } } { \mathrm { m } } \mathrm { s }$

S =