What is the electric field at the centroid of an equilateral triangle of side length r , carrying charge q at each corner?

Question

What is the electric field at the centroid of an equilateral triangle of side length r , carrying charge q at each corner? (A)  √2 Kq r-2  (B)  (1/√2 × Kq r-2)  (C)  3 Kq r-2  (D) zero

Tardigrade Admin · Accepted Answer

Three electric fields will be equal in magnitude and opposite in direction. Therefore, electric field at the centre O is zero <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/b9c8918eb0da7a5030aa20a79e51212c-.jpeg" />

Q. What is the electric field at the centroid of an equilateral triangle of side length $r$ , carrying charge $q$ at each corner?

$2 K q r^{- 2}$

$(1/ 2 \times K q r^{- 2})$

$3 K q r^{- 2}$

zero

Three electric fields will be equal in magnitude and opposite in direction. Therefore, electric field at the centre $O$ is zero

Q. What is the electric field at the centroid of an equilateral triangle of side length r , carrying charge q at each corner?

2​Kqr−2

(1/2​×Kqr−2)

3Kqr−2